Adding and Taking Away with Real Objects

Help your child solve their first number stories with things they can touch. You will show your child what adding and taking away mean, how to find out how many there are now by counting, and how to act out short stories with toys, fingers and quick drawings, first with numbers up to five and then up to ten. Everyday routines, games and songs give plenty of chances to practice, a few minutes at a time.

Pre-K, KindergartenLesson 2 of 6 in Early Math for Ages 4 to 5 Course

What you will learn

  1. Help your child see, with real things they can touch and move, that adding makes a group bigger and taking away makes it smaller.
    • Add by putting more in or putting groups together
      Show your child the two everyday kinds of adding: more things join a group, or two groups are put together into one, and then you find how many there are.
    • Take away some things and see what is left
      Show your child that taking away means some things leave a group, and that the question is how many are still there.
  2. Teach your child to find the answer by counting the objects carefully: first by counting every object, and later, when they are ready, by counting on and counting back.
    • Count all the objects after adding
      After two groups are joined, your child counts every object, starting again at one, and says how many there are altogether.
    • Count what is left after taking away
      After some objects are taken away, your child counts only the ones still there, and knows that when nothing is left the answer is zero.
    • Count on and count back when your child is ready
      Once counting all is easy, show your child how to start from the number in the first group and count on to add, or count back to take away.
  3. Turn short number stories into actions your child can see and do: first with numbers up to five, then up to ten, using toys, bodies, fingers and quick drawings.
    • Follow a story in three parts: first, then, now
      Help your child follow a short number story, say whether there will be more or fewer, and tell in their own words what happened.
    • Act out stories to five with toys and pretend play
      Let your child solve stories by doing them: moving toys, using their own body or playing a pretend scene, with numbers up to five.
    • Show a story with fingers and quick drawings
      Teach your child to use fingers, simple drawings, and five and ten frames to show a story when there are no toys at hand.
    • Step up to stories up to ten
      When stories to five feel easy, use bigger numbers up to ten, including put-together stories, taking-apart stories and stories with zero.
  4. Use daily routines, games, songs and your child's own stories to practice briefly and often, and to see how your child is doing.
    • Find adding and taking away in daily life, games and songs
      Notice the adding and taking-away moments that happen anyway at home and outside, and turn a few of them into a quick question or a game.
    • Invent stories, check answers and help when your child is stuck
      Let your child make up their own stories, check answers by counting again, try more than one way, and get gentle help when something goes wrong.

Adding and Taking Away study guide

4 chapters

1

Show joining and taking away

Let your child see groups change before asking for a number. A few toys can show things arriving, joining, leaving, or being sorted into parts. You will give those actions simple words and help your child notice which objects the question asks about.

1.1 See what happens when groups join

Adding joins things so you can find how many there are altogether. Let your child move familiar things, such as blocks, spoons, or toy animals. Say what happens while they can see it.

More things arrive

Put 4 crackers on a plate. Let your child count them. Say, "I'm adding 1 more cracker," and put it beside the others. Ask, "Are there more crackers now, or fewer?" Then ask, "How many crackers are there altogether?"

Your child counts every cracker: "1, 2, 3, 4, 5." Say, "There are 5 crackers." The answer includes the crackers already there and the new one. If your child answers "1," bring the crackers close together. Point around the whole group as you ask again.

Words such as "more," "join," "in all," and "altogether" help describe adding. Match the word to the movement: "Two more cars are coming!" as you slide them over.

Two groups make one whole

You can also add when nothing new arrives. Set out 3 red blocks and 2 blue blocks. Ask, "How many blocks are there altogether?" Your child counts all 5 blocks. The colors show the two parts, but the question asks about every block.

StoryWhat your child shows
"Three ducks are here. Two more swim over."A group gets more ducks.
"Three red blocks and two blue blocks are here."Two groups are counted together.

Try joining 2 blocks to 3 blocks, then start again and join 3 to 2. Count each whole group. Both ways give 5 blocks. The joining order changed; the number of blocks did not.

What changes the number?

Adding some objects makes a group bigger. Adding none leaves the number the same. For example, "There are 3 cars. No more cars arrive." Your child can count the 3 cars to check.

Spreading a group out also leaves its number the same. Count some blocks, move them farther apart, and count again. No block joined or left. If the longer row looks like more, let your child bring it close together and check each block.

Key Takeaways

  • Adding finds how many there are when groups join.
  • An adding story can show arrivals or two groups counted together.
  • Count the whole joined group, including the objects already there.
  • Joining the same groups in either order gives the same total.
  • Adding none or moving objects around leaves the number unchanged.

1.2 See what stays when things leave

Taking away means some things leave a group. Your child then finds how many are still there. You may also hear the word subtracting for taking away.

Drive some cars away

Line up 6 toy cars on the table. Count them together, then drive 2 into a box garage. Say, "Two cars drive away." Ask, "Are there more cars on the table now, or fewer?"

Point to the cars that stayed. Your child counts, "1, 2, 3, 4." Say, "Four cars are still here." Open the garage afterward. The 2 cars inside and the 4 on the table are the 6 you started with.

"Left" means still there in these stories. Your child may think you mean their left hand. Try, "How many cars are left over?" or "How many are still here?" Point to the place named in the question.

Keep the two groups clear

A child may count the cars in the garage and answer "2." That tells how many went away. The question asks about the cars on the table. Keep the garage closed while your child counts those cars.

Use action words during play: "give away," "eat," or "fly away." The movement shows what the word means. Taking some objects away makes the starting group smaller.

None, all, and putting back

Taking away none leaves the number unchanged. If 3 cookies are on a plate and nobody eats any, 3 remain. Taking away all of them leaves none. The number name for none is zero. An empty plate can have zero cookies.

Adding can undo taking away. Drive the same 2 cars back out of the garage. Count every car on the table again: 6. Putting the cars back checks the starting group.

Split a group without losing anything

Taking apart is another way to look at a group. Set out 5 socks: 2 striped and 3 plain. Let your child sort them and count each part. There are 2 striped socks and 3 plain socks, with 5 socks in all. Nothing has left. Ask about the part you want your child to count, such as "How many socks are plain?"

Key Takeaways

  • After taking away, count the objects still in the named place.
  • "Left over" and "still here" can make the question clearer.
  • Taking away all leaves zero; taking away none changes nothing.
  • Putting the removed objects back restores the starting group.
  • Taking apart splits a whole into parts without losing objects.
2

Help your child count the answer

Careful counting gives your child a way to find an answer. Begin by touching each object in the final group, then saying how many there are. When that feels easy, try counting forward or backward from a known number, keeping each movement matched to a spoken number.

2.1 Count the whole joined group

Your child can solve an adding story by counting every object after the groups join. This is called counting all. Starting again at 1 is a correct way to find the answer.

Give every object one number

Set out 3 toy ducks, with 2 more nearby. Keep both groups visible as you tell the story: "Three ducks are here. Two more swim over." Let your child move the new ducks into the group.

  1. Count the first group before anything joins.
  2. Bring in the new objects.
  3. Push the groups together or line them up.
  4. Start at 1 and touch each object once.
  5. Say the last number as the answer: "Five ducks!"

The last number tells how many there are in the whole group. If your child counts correctly and starts again when you ask "How many?", model the finish: "1, 2, 3, 4, 5. There are 5."

Keep hands and words together

Young children may say the number words faster than they touch the objects. Move one duck to the side for each number. The ducks already counted stay on one side; those waiting stay on the other.

If a duck gets counted twice, put the whole group back in a row. Count slowly together, with one number for each touch. A clear row helps your child see where to start and where to stop.

Try a bigger group

When smaller groups feel easy, build a tower of 6 blocks. Hand your child 3 more blocks for the top. Once all the blocks are in place, touch each block from bottom to top: "1, 2, 3, 4, 5, 6, 7, 8, 9." The tower has 9 blocks. If the tower hides blocks, lay them in a row to check.

Counting all also works when two groups were there from the start. You might set out white ducks and brown ducks and ask about all the ducks. Keep the parts visible, then count the whole group. Your child does not need to count on to solve either kind of adding story.

Key Takeaways

  • Counting all starts again at 1 after the groups join.
  • Move or touch each object once as you say its number.
  • The final number tells how many are in the whole group.
  • Counting all works for arrivals and put-together stories.

2.2 Count only the things still there

After taking objects away, your child counts the ones that stayed. Two counts have different jobs: count how many leave, then count how many remain.

Make the action exact

Start with 8 pretend grapes on a plate, using blocks as grapes. Ask your child to count the starting group. Tell the story: "Three grapes get eaten. How many are left on the plate?"

Have your child move the pretend grapes into a box, one at a time. Count "1, 2, 3" as they go. Stop after the third grape. Set the box apart, then count the grapes still on the plate: "1, 2, 3, 4, 5." Five grapes remain.

A handful can take away more than the story says. Counting each object as it leaves helps your child stop at the right amount. If they take the whole group, set it up again and pause after each object moves.

Point to what the question asks

If your child counts all 8 grapes again, the taken-away grapes may still look like part of the group. Keep the box closed and point to the plate. Ask, "How many are still on this plate?"

If your child answers "3," ask them to show what they counted. Three is how many went away. The answer about what remains comes from the 5 objects on the plate.

Count an empty group

Tell a story with 4 toy birds on a fence. Let all 4 fly away. Ask how many birds are still on the fence. There are no birds to touch or count. "None" and "zero" are both correct answers.

To check a taking-away story, put the removed objects back. In the grape story, return the 3 pretend grapes to the 5 on the plate. Count all 8 again. If the starting group does not return, check how many moved and whether each object received one number.

Key Takeaways

  • Count out exactly how many objects leave, then set them aside.
  • Start at 1 to count only the objects that remain.
  • An empty group has zero objects.

2.3 Count forward or backward from a known number

Once your child counts all with ease, they can try keeping the first number in mind. Counting on and counting back shorten the count while objects still show what happens.

Check that your child is ready

Your child needs to count to ten reliably and know that the last number gives the total. They also need to start from a number other than 1. Try, "Start at 4 and keep going." Listen for "5, 6, 7." Many children are ready around age 5 or 6; use what your child can do to guide you.

Count on for each new object

Show 5 cars and count them. Say "five" before moving anything. Add 2 cars, one at a time. Say "six" for the first new car and "seven" for the second. There are 7 cars.

If your child says "five, six" while adding the cars, they have used the starting number for a new object. Cover the first group and say, "Five cars are hiding here." The next car needs the next number, "six."

You can start with the bigger group to make fewer counting steps. For 2 shells and 6 shells, keep 6 in mind and touch the other 2: "seven, eight." Joining the groups in either order gives 8 shells.

Count back as objects leave

Show 6 apples and say "six" before taking any away. Remove 2 apples, one at a time. Say "five" as the first leaves and "four" as the second leaves. Four apples remain.

The starting number is not the first backward step. Saying "six" as the first apple leaves would leave the count one too high. Match each removal with the next number back.

Try a number path

Lay out paper spaces labeled 1 through 10. Start on 5 and move forward 2 spaces, landing on 7. Start on 6 and move back 2 spaces, landing on 4. The space you start on tells where you are before moving; it is not a move.

If a new counting method gives a different answer, uncover the objects and count all to check.

Key Takeaways

  • Try counting on after counting all and starting from different numbers feel easy.
  • Say the starting number before anything moves.
  • Say the next number for each object added or removed.
  • Starting with the bigger group can shorten an adding count.
  • A number path shows each forward or backward step.
  • Check an uncertain answer by counting the real objects.
3

Turn stories into things to count

A short story gives your child a reason to move and count. Begin with a few toys and pauses between sentences. As the actions become familiar, try fingers, simple marks, and larger groups. Listen to your child describe the story as well as give its answer.

3.1 Tell what happened first, then, and now

A number story is a short story with a question about how many. You may also hear "story problem" or "word problem." Use your child's name or favorite toys so the scene is easy to picture.

Pause at each part

Tell a changing story in three parts. First gives the starting group. Then tells what happens. Now asks about the group at the end.

Try, "First, 2 frogs sat on a log." Wait while your child places 2 toy frogs. "Then, 1 more frog jumped on." Let your child move it. Ask, "Now how many frogs are on the log?" Count the 3 frogs together.

Before counting, ask, "Will there be more frogs or fewer?" Your child can show that they understand the arrival before finding the exact number. Afterward, invite them to retell it: "Two frogs were here. One jumped on. Now there are 3."

Listen to the whole scene

Action words help, especially when paired with movement. Things may "come," "join," or "fly away." But a single word does not settle what to count. Ask your child to show the action and point to the place named in the question.

If they answer with the last number heard, such as "1," ask them to move the frogs and count the group now on the log. This ties the answer to what happened.

Some stories show parts

A number story can also describe two groups already there: "Here are 2 red cups and 3 blue cups. How many cups are there?" Count all 5 cups. No cup needs to arrive.

For a whole split into parts, ask about a part your child can see and count. "Here are some red and blue cups. How many are blue?" Let your child sort the actual cups and count the blue group.

Choose stories whose question asks about the end group, all the objects, or a visible part. Keep the sentences short, and give your child time to do each action before you continue.

Key Takeaways

  • First names the start, then tells the action, and now asks about the end.
  • Predict more or fewer before counting, then retell what happened.
  • Listen to the whole story and count the group the question names.
  • Stories can describe arrivals, departures, or a whole and its parts.

3.2 Make a small story happen in play

Acting out lets your child turn a spoken story into something they can see. Start with numbers up to five, including the answer. Let your child move the toys while you tell one sentence at a time.

Play the bus game

Set out chairs as a pretend bus. Put 3 teddy bears aboard. Ask your child to count the passengers.

At the first stop, say, "One bear gets off." Your child moves 1 bear away and counts the passengers still riding: 2. Pause for the answer before the next stop.

Then say, "Two bears get on." Your child brings 2 bears onto the bus. Count all the passengers now: 4. The second story starts with the 2 bears who stayed after the first stop.

Ask, "How do you know?" Your child can point to each passenger and count again. Ask this after correct answers too, so checking becomes part of play.

Give your child a turn

If your child moves 3 bears when the story says 2, return to the start of that action. Say, "Show me 2 bears getting on." Wait for the two moves before asking about the passengers.

You can show the first action when your child is unsure. Move one bear yourself while saying what you are doing. Then hand the toys back and let your child try.

Use bodies and songs

Family members can sit on or leave a couch as pretend passengers. Your child can also clap or jump to act out a count. For a group that must stay visible, toys or fingers help keep track of it.

Counting-down songs give repeated taking-away stories. In "Five Little Monkeys Jumping on the Bed," one monkey falls off each verse. Hold up 5 fingers or line up 5 toys. Fold down a finger or move a toy away for each monkey that leaves, then count those still there. Keep the toy movements matched to the verse.

Key Takeaways

  • Use small groups and let your child carry out each action.
  • Pause between story sentences so the toys match the words.
  • Ask your child to show how they know by counting again.

3.3 Show a story on hands or paper

Fingers and quick drawings can stand for things in a story. Use them after your child is comfortable moving real objects. Bring the toys back whenever a story becomes hard to follow.

Add and take away on fingers

For 3 and 2 more, hold up 3 fingers on one hand and 2 on the other. Count every raised finger: "1, 2, 3, 4, 5." Each finger stands for one thing.

A number above 5 already uses both hands. To show 6 and 2 more, hold up one full hand and 1 more finger. Raise 2 more fingers on the second hand, then count all 8. One whole hand shows 5.

To take away, fold fingers down. Start with 5 raised fingers, fold down 2, and count the 3 still raised. If fingers bend or get counted twice, touch each raised finger to the table as you count. Your child can also use blocks again to keep the group steady.

Draw simple marks

A dot or circle can stand for each object. Your child does not need to draw detailed birds, cars, or animals.

For "Seven birds are here. Three fly away," draw 7 dots. Cross out 3, one at a time. Count only the dots without a line through them: 4. The crossed-out marks show the birds that left. If your child counts them too, point to each plain dot with a pencil.

To show adding, draw the first group of dots, add the new dots, and count all of them. Let your child tell you what each group stands for.

Give counters their own spaces

A five frame is one row of 5 boxes. A ten frame has two rows of 5 boxes. Put one counter in each box so the count stays clear. Choose counters large enough for your child to handle safely.

Put 4 counters in a five frame and add 1. Every box is filled, showing 5. Empty boxes show how many more counters would fill the frame. In a ten frame, a full row shows 5 and the other row holds up to 5 more.

If the marks or spaces distract your child from the story, solve it with objects first. Then make the drawing or frame together, matching one mark or counter to each object.

Key Takeaways

  • Each raised finger or drawn dot can stand for one object.
  • Numbers above 5 use both hands.
  • Fold fingers down or cross dots out to show things leaving.
  • Count only the fingers still up or dots not crossed out.
  • A five frame has 5 spaces; a ten frame has two rows of 5.

3.4 Build up to stories within ten

When stories to five feel easy, bring in larger groups up to ten. Keep the starting numbers and answers within ten. The actions stay familiar, but your child has more objects to track.

Keep the count clear

Line up objects, use two hands of fingers, or put counters in a ten frame. For 7 cookies and 3 more, show the 7 first. Add 3, then count all 10 cookies. Let your child move each object once as they count.

Try a taking-away story with 10 pretend bowling pins. Knock down 4. Ask, "How many pins are still standing?" Point to the standing pins and count 6. The fallen pins tell how many went down; the question asks about those still up.

Include groups and parts

Two groups need not move to be counted together. "Six children are in the sandbox. Two are on the swings. How many children are playing?" Use toy people for the two groups, then count all 8.

Taking apart starts with the whole group. Show 9 crayons: 4 red and the rest blue. Let your child sort by color and count the blue crayons: 5. Put both piles together again and count all 9. Sorting changed where the crayons were, without changing the whole group.

Keep zero in the stories

For "Eight balloons are here. Zero balloons pop," leave all 8 counters in place. Nothing goes away, so 8 remain. For "Six pancakes are here. All 6 get eaten," remove every counter. None remain: zero pancakes.

Your child may notice that 5 cars and 2 more make 7, just as 5 birds and 2 more make 7. The same numbers with the same action give the same answer. Changing the action changes the story: taking 2 from 5 leaves 3.

Mix the larger stories with small ones. If your child loses track, try a smaller group or lay the objects in a clearer row. Use what they can show and explain to choose the next story.

Key Takeaways

  • Move toward ten when stories to five feel easy.
  • Use a row, two hands, or a ten frame to track larger groups.
  • Count the whole for put-together stories and the named part for take-apart stories.
  • Use zero for nothing joining, nothing leaving, or nothing remaining.
  • The same numbers and action give the same answer in a new setting.
4

Practice during everyday play

Snack time, setting the table, and pretend play all offer small number stories. Choose a moment your child enjoys, then leave time for them to act and explain. Their stories and checks help you see what is becoming easy and where a clearer model would help.

4.1 Find a number story during the day

A small change during a daily routine can become a number story. Ask one question while your child can still see what is happening. A few minutes of play gives you time to listen and watch.

Use a moment already happening

At the table, say, "We have 4 forks. Grandpa is coming, so we need 1 more." Let your child add the fork and count all 5. At snack time, ask how many crackers remain after some are eaten. While tidying, ask about toys still waiting to go into the box.

Use the math words as you act: "You have 3 blocks. I'll give you 2 more. How many do you have now?" Your child hears "more" while seeing the group grow. Outside, leaves gathered into a pile or children leaving a playground can give another short story.

Wait for one answer before adding a new question. Stop while your child still enjoys the game. You can find another moment later.

Make the action part of a game

Stand up plastic bottles for bowling. After a roll, count the bottles still standing. Ask about the fallen bottles separately so your child knows which group to count.

A stuffed animal can be a pretend hungry monster. Put a small group of pretend snacks in front of it. Let the monster eat some by moving them aside, then count what remains.

A board game with a die and numbered spaces can practice counting on. Start moving on the space after the one holding the piece. Move once for each dot on the die. Counting the starting space as a move leaves the piece one space short.

Let songs carry the story

In "Five Little Ducks," one fewer duck comes back each time. Move a toy duck away as you sing. In "Ten in the Bed," one child rolls out in each verse until only the little one remains. Toys or fingers let your child show who is still there.

Notice careful work: "You touched every block as you counted." This tells your child what helped. Give them time to move the objects and explain, without turning the game into a race.

Key Takeaways

  • Ask one question during a visible daily change.
  • Games and songs give actions your child can count.
  • In a board game, count the next space as the first move.
  • Keep practice brief and notice careful thinking.

4.2 Let your child lead and check the story

Swap roles so your child tells a number story and you solve it. Their words and movements show what they understand. You can also spot where a little help would make the next step easier.

Listen to your child's story

Invite your child to choose some toys. They might say, "Three dinosaurs were playing. One ran away." Move the dinosaur and count the 2 still playing. Ask your child to check your answer with the toys.

Now ask, "Can you show me another way?" They might raise 3 fingers and fold down 1, or draw 3 dots and cross out 1. Both show 2 remaining. Keep the starting group and action the same when changing the way you show it.

Watch where things go wrong

An incorrect answer tells you to look at the actions and counting. If your child moves the wrong number, tell one sentence at a time and wait. If the number words race ahead of the fingers, model one touch for each number. If they count the toys that left, point to the toys still in the named place.

Use smaller numbers when the whole story feels hard. Real objects can make the action clearer than fingers or a drawing. Show a first move yourself, then let your child continue.

Make checking playful

Count again even after a correct answer. For a taking-away story, put the removed toys back and see whether the starting group returns.

Occasionally make a small mistake on purpose: "Three frogs, and one more joins. That makes three!" Invite your child to show you with the toys. Let the count settle the answer.

Notice what is getting easier

Look for your child moving the toys without help, predicting more or fewer, counting accurately to five and then ten, and telling their own stories. Starting to count on is another sign to notice. Your child can understand the action well while still needing real objects. Choose the next game from what they can show you today.

Key Takeaways

  • Let your child invent stories and check your answers.
  • Keep the numbers and action the same when trying another way.
  • Match your help to the difficulty you see in the action or count.
  • Recount or put objects back to check.
  • Notice understanding and growing independence, without rushing the answer.

Adding and Taking Away examples

4 Walkthroughs

1

Watch groups join and things leave

12 steps
Use toy groups to show what adding, taking away, and taking apart mean.
  1. 1
    IntroductionGive the story something to move

    Gather a few blocks, toy animals, and an empty box. Your child will move groups while you describe what happens: groups join (adding), leave (taking away), or split into parts (taking apart). Start with small amounts so they can watch the action, then count the group the question names.

  2. 2
    ExampleLet another toy arrive

    Put 2 toy dogs on a mat. Say, "Two dogs are here. One more comes to play." Slide another dog onto the mat. Ask whether there are more dogs now, then let your child touch all the dogs and count: "1, 2, 3." There are 3 dogs.

  3. 3
    ExplanationCount two groups together

    Adding can also join groups that are already there. Put 2 yellow blocks beside 2 green blocks. Ask, "How many blocks altogether?" Your child counts all 4. The colors show the two parts; no new block has to arrive during the story.

  4. 4
    ChallengeWhich blocks belong in the answer?

    There are 3 orange blocks and 1 purple block. Your child answers "1" when asked how many blocks there are altogether. What could you ask them to count?

    ---reveal---

    Bring the groups together and ask them to count every block. The answer is 4; 1 counts only the purple part.

  5. 5
    Key InsightTry joining in the other order

    Join 1 block to 3 blocks and count 4. Start again, then join 3 blocks to 1 block. Count 4 again. The same blocks are in the whole group both times. You can also spread the 4 blocks apart and recount: moving them changes their places, not their number.

  6. 6
    ExampleLet some toys leave

    Line up 5 toy rabbits. Say, "Two rabbits go into their house," and move 2 into a box. Point to the rabbits outside. Ask, "How many rabbits are still here?" Your child counts the 3 outside the box. Keep the box closed during that count.

  7. 7
    TipMake "left" clear

    Your child may hear "left" and think of a hand. Try "left over" or "still here," and point to the named place. If they count the rabbits in the box, ask them to show the rabbits still on the table. The question decides which group to count.

  8. 8
    ChallengeLet every toy leave

    There are 2 toy crabs on a beach. Both walk into the sea. How many crabs are still on the beach?

    ---reveal---

    Zero crabs are on the beach. "None" is also correct. The 2 crabs show how many left, while the empty beach shows the answer about those still there.

  9. 9
    ExplanationKeep the whole while sorting parts

    Sort 5 socks into 2 striped and 3 plain socks. This is taking apart: one whole becomes two parts, and all the socks stay. Ask your child to count each part, then count the whole group again. Both parts together still have 5 socks.

  10. 10
    ConnectionBring back the toys that left

    Return the 2 rabbits from the box to the 3 outside. Count all 5 rabbits again. Adding back what left undoes the taking away. Your child can use this check with toys: the returned objects and those that stayed rebuild the starting group.

  11. 11
    ChallengeTell whether the number changes

    You have 4 toy boats. First you spread them apart. Then zero more boats arrive. How many boats are there, and why?

    ---reveal---

    There are still 4 boats. Spreading them apart adds none, and no boats arrive or leave afterward. Your child can bring them together and count all 4 to check.

  12. 12
    RecapChoose a story for your child

    Set out a small group and let your child choose what happens next: a toy joins, a toy leaves, or the group is sorted into parts. Ask them to show the action and point to the group you should count. Let their movements guide your next question.

2

Find the answer with a careful count

14 steps
Practice counting all and counting what remains, then try counting on and back when ready.

Save this lesson to follow every Walkthrough step by step.

  1. 1
    IntroductionMatch each number to something
  2. 2
    ExampleBuild the starting group
  3. 3
    ExampleStart at one after joining
  4. 4
    ChallengeKeep the touches in time
  5. 5
    ExampleCount how many go away
  6. 6
    ExampleCount the group that stayed
  7. 7
    ChallengeTake away all of them
  8. 8
    ExplanationKeep a known number in mind
  9. 9
    ExampleGive new objects the next numbers
  10. 10
    TipStart with the bigger group
  11. 11
    ExampleSay a number back for each removal
  12. 12
    ChallengeCheck the first backward step
  13. 13
    ChallengeSettle two different answers
  14. 14
    RecapWatch the count your child chooses
3

Make a number story you can see

18 steps
Follow first, then, and now with toys, hands, drawings, and groups up to ten.

Save this lesson to follow every Walkthrough step by step.

  1. 1
    IntroductionGive your child time to show it
  2. 2
    ExplanationBuild first, then, and now
  3. 3
    ChallengeHear the action before the answer
  4. 4
    ConnectionLet your child retell it
  5. 5
    ExampleStart with a small pretend scene
  6. 6
    ExampleMake the next stop
  7. 7
    ChallengeSlow down the action
  8. 8
    ExplanationMake each finger stand for one
  9. 9
    ExampleUse both hands for a bigger start
  10. 10
    ExampleLet dots show things leaving
  11. 11
    ChallengeCheck what a drawing counts
  12. 12
    TipGive each counter a box
  13. 13
    ExplanationKeep bigger stories easy to follow
  14. 14
    ExampleJoin groups up to ten
  15. 15
    ChallengeFind a part inside the whole
  16. 16
    Key InsightLeave room for zero
  17. 17
    ChallengeShow the same story another way
  18. 18
    RecapInvite a story your child can show
4

Use play to practice and notice progress

12 steps
Find short everyday stories, let your child invent one, and choose help from what you see.

Save this lesson to follow every Walkthrough step by step.

  1. 1
    IntroductionChoose a moment already happening
  2. 2
    ExampleSet the table for one more
  3. 3
    ConnectionTurn a game into a story
  4. 4
    ChallengeCheck a board-game move
  5. 5
    ExampleGive your child the storyteller role
  6. 6
    ExplanationTry another way to show it
  7. 7
    TipMatch your help to what happens
  8. 8
    ChallengeFind the mismatch between models
  9. 9
    ChallengeLet your child catch your mistake
  10. 10
    Key InsightNotice careful thinking
  11. 11
    ChallengeCheck a story during snack play
  12. 12
    RecapPick the next small chance to play

Adding and Taking Away practice questions

40 Practice Questions in 4 sets

Set 1: Small groups and first number stories10 Practice Questions

Question 1 of 10

You set out 2 yellow hats and 1 green hat. How many hats are there altogether?
  1. 1 hat
  2. 3 hats
  3. 2 hats
  4. 4 hats
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Answer: B
There are 3 hats when both colors are counted together. An answer of 1 counts only the green hat and leaves out the 2 yellow hats.

Question 2 of 10

There are 4 toy horses in a field. Three go into a barn. How many are still in the field?
  1. 3 horses
  2. 4 horses
  3. 2 horses
  4. 1 horse
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Answer: D
Move 3 of the 4 horses into the barn, leaving 1 horse in the field. The 3 horses in the barn are the ones that went away, so they do not answer the question about the field.

Question 3 of 10

Your child puts a group of 2 blocks beside a group of 3 blocks. To count all, where should the count begin?
  1. At 1, with every block
  2. At 3, with every block
  3. At 1, with just the new blocks
  4. At 2, with just the new blocks
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Answer: A
Counting all begins at 1 and gives each of the 5 blocks one number. Starting at 1 but counting only the new blocks misses part of the whole group.

Question 4 of 10

Your child joins 1 toy bus to 3 toy buses. They touch each bus once while saying, "1, 2, 3, 4." What answer should follow when you ask, "How many buses?"
  1. 1 bus
  2. 3 buses
  3. 4 buses
  4. 5 buses
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Answer: C
The last number in the careful count is 4, so there are 4 buses. Saying 1 would count only the bus that joined, even though the question asks about the whole group.

Question 5 of 10

Five toy turtles sit on a mat. Your child moves all 5 into a box. How many turtles are on the mat now?
  1. 1 turtle
  2. Zero turtles
  3. 4 turtles
  4. 5 turtles
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Answer: B
There are zero turtles on the mat because every turtle left it. Five is the starting number and the number moved into the box, not how many stayed on the mat.

Question 6 of 10

Your child knows there are 3 boats. You add 2 more. What should they say for the new boats when counting on?
  1. "Four, five"
  2. "Three, four"
  3. "One, two"
  4. "Five, six"
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Answer: A
The first group already has 3 boats, so the next boat is four and the next is five. Saying "three, four" counts the starting number as the first new boat and finishes one too low.

Question 7 of 10

You say, "First, 3 owls sat in a tree. Then, 1 flew away." Before counting, what change can your child predict?
  1. More owls are in the tree.
  2. The same number are there.
  3. No owls are in the tree.
  4. Fewer owls are in the tree.
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Answer: D
There will be fewer owls in the tree because an owl leaves. The group does not stay the same: flying away removes a member, even before your child works out the exact number.

Question 8 of 10

A pretend bus starts with 2 animals. One gets off, then 3 get on. How many animals ride after both stops?
  1. 3 animals
  2. 4 animals
  3. 5 animals
  4. 2 animals
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Answer: B
Begin with 2 animals and let 1 get off, leaving 1. Three joining that animal make 4 animals. An answer of 5 adds the new passengers to the starting 2 without letting the first passenger get off.

Question 9 of 10

A story starts with 5 birds. Two fly away, then 1 more bird joins. Your child wants to show it with dots. What drawing and final count would fit the whole story?
  1. Draw 5 dots, cross out 2, add 1; count 6 remaining.
  2. Draw 5 dots, cross out 1, add 2; count 6 remaining.
  3. Draw 5 dots, cross out 2, add 1; count 4 remaining.
  4. Draw 5 dots, cross out 2, add 1; count 3 remaining.
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Answer: C
Start with 5 dots, cross out 2 for the departing birds, and add 1 for the arrival. The 3 original plain dots and the new dot show 4 birds. Counting all 6 marks includes the 2 birds that already left.

Question 10 of 10

You want a brief adding story while setting the table. What could you ask your child to do?
  1. Add a spoon for a guest and count all.
  2. Put a spoon away and count those left.
  3. Sort spoons by size and name each group.
  4. Count the spoons and spread them apart.
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Answer: A
Adding a spoon for a guest brings another object into the group, and counting all finds the new total. Putting a spoon away would make a taking-away story because a spoon leaves the table.
Set 2: Show the story with objects and hands10 Practice Questions

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Question 1 of 10

Your child has 4 toy fish. No more fish join. How many fish are there now?
  1. Zero fish
  2. 5 fish
  3. 4 fish
  4. 3 fish
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Question 2 of 10

You sort 5 mittens into 3 striped mittens and 2 plain mittens. What happened to the whole group?
  1. It still has 5 mittens.
  2. It now has 3 mittens.
  3. It now has 2 mittens.
  4. It now has 4 mittens.
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Question 3 of 10

Your child has 5 toy stars and joins 2 more. They touch stars faster than they say the numbers and get different answers. What can help them find a reliable total?
  1. Keep stars still and say numbers faster.
  2. Count only the 2 new stars you added.
  3. Spread the stars far apart and guess.
  4. Slide one star aside for each number.
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Question 4 of 10

There are 9 toy penguins on an ice sheet. Four move into the water. How many stay on the ice sheet?
  1. 4 penguins
  2. 5 penguins
  3. 6 penguins
  4. 9 penguins
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Question 5 of 10

Your child starts with 8 blocks and removes 3. What counting-back words match the removals?
  1. "Eight, seven, six"
  2. "Six, five, four"
  3. "Seven, six, five"
  4. "One, two, three"
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Question 6 of 10

Your child hears, "Four kittens slept here. Two went away. How many are here now?" They answer "2" without moving the toys. How can you check that they understood the story?
  1. Ask them to say the final number louder.
  2. Ask them to repeat the last number heard.
  3. Ask them to line up 2 toys without a story.
  4. Ask them to act out and retell the story.
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Question 7 of 10

In a pretend picnic, 4 bears sit down and 1 more joins. How many bears are at the picnic now?
  1. 5 bears
  2. 3 bears
  3. 4 bears
  4. 1 bear
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Question 8 of 10

Your child shows a story with 6 ducks and 3 more joining. They raise 6 fingers, then start again with 3 fingers and answer "3." How can they show the whole story on their hands?
  1. Keep 6 raised, then raise 2 more and count 8.
  2. Keep 6 raised, then fold down 3 and count 3.
  3. Keep 6 raised, then raise 3 more and count 9.
  4. Raise 3, then raise 3 more and count 6.
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Question 9 of 10

There are 8 toy baskets. Five are red and the rest are blue. How many baskets are blue?
  1. 5 baskets
  2. 3 baskets
  3. 8 baskets
  4. 4 baskets
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Question 10 of 10

Your child models 4 seals with 1 leaving. With toys they find 3, but their drawing shows 4 plain dots and 1 crossed dot. What should you check first?
  1. Whether they can count every dot to 5.
  2. Whether they can draw the dots larger.
  3. Whether the toy answer should change to 4.
  4. Whether they drew the starting 4 dots.
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Set 3: Count carefully and check the action10 Practice Questions

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Question 1 of 10

Your child counts 5 shells. You spread those same shells farther apart. How many shells are there now?
  1. 6 shells
  2. 4 shells
  3. Zero shells
  4. 5 shells
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Question 2 of 10

Seven toy chicks are in a pen. Your child moves 2 out, then puts those same 2 back. How many chicks are in the pen now?
  1. 5 chicks
  2. 7 chicks
  3. 9 chicks
  4. 2 chicks
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Question 3 of 10

A story starts with 8 boats, and 3 sail away. Your child moves 2 away and counts 6 still there. What explains the mismatch, and what should they do?
  1. The final count is wrong; count the same 6 again.
  2. The starting group is wrong; begin with 9 boats.
  3. Too few left; move one more away and count.
  4. Too many left; put one boat back and count.
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Question 4 of 10

Your child joins a group of 1 block to a group of 7. They want to count on with fewer counting steps. What should they say for the added block?
  1. "Eight"
  2. "Seven"
  3. "One"
  4. "Six"
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Question 5 of 10

A toy piece starts on 4 on a number path. Your child moves it forward 3 spaces but counts the starting space as "one" and lands on 6. Where should it land, and what fixes the moves?
  1. On 6; begin by counting space 4.
  2. On 8; take one extra move after 7.
  3. On 5; move only one space from 4.
  4. On 7; begin by moving to space 5.
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Question 6 of 10

A story says, "There are 3 red kites and 4 blue kites. How many kites are there altogether?" What should your child show?
  1. Only the 4 blue kites
  2. Only the 3 red kites
  3. All 7 kites counted together
  4. One kite leaving each group
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Question 7 of 10

Your child draws a story with 8 balloons and 3 popping. They cross out 3 dots but count all 8 dots in the answer. How could a finger model help them check?
  1. Raise 8, fold down 5, count those up.
  2. Raise 8, fold down 3, count those up.
  3. Raise 3, fold down 3, count those up.
  4. Raise 8, fold down 3, count those down.
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Question 8 of 10

There are 6 toy rockets. Zero rockets leave. How many are still there?
  1. 6 rockets
  2. Zero rockets
  3. 5 rockets
  4. 7 rockets
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Question 9 of 10

During a counting-down song, one toy character leaves each verse. What should your child do to match a verse to the toys?
  1. Add a toy, then count the whole group.
  2. Remove one toy, then count those left.
  3. Remove all toys, then count those gone.
  4. Move toys apart, then count the group.
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Question 10 of 10

Your child understands a story with 3 toy bugs but gets lost with 9 bugs. What could help you practice the same action today?
  1. Keep 9 bugs and ask for a faster answer.
  2. Hide all 9 bugs and repeat the question.
  3. Use fewer bugs and let your child move them.
  4. Change to dots with more bugs than before.
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Set 4: Choose a model and explain a check10 Practice Questions

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Question 1 of 10

Your child joins 4 blocks to 2 blocks. In a line, they count 6. After the same blocks are piled up, they say 7. How can they check the total?
  1. Lay them in a row and move each once.
  2. Keep the pile and repeat the number 7.
  3. Count the 4 blocks without the other 2.
  4. Add a new block and count the pile.
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Question 2 of 10

There are 10 toy spiders on a mat. Six go into a box. How many spiders are still on the mat?
  1. 6 spiders
  2. 5 spiders
  3. 4 spiders
  4. 3 spiders
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Question 3 of 10

Your child takes 2 away from 9, saying "nine, eight" during the removals. They answer 8, then count the objects left and find 7. How can you explain and fix the shorter count?
  1. Use 8 as the start, then say "seven, six."
  2. Say "nine" first, then remove with "eight, seven."
  3. Keep 9 as the first removal and answer 8.
  4. Count "one, two" as things leave and answer 2.
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Question 4 of 10

Your child acts out 5 toys at a party, 3 going home, and 1 arriving later. How many toys are at the party after both changes?
  1. 2 toys
  2. 4 toys
  3. 6 toys
  4. 3 toys
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Question 5 of 10

A ten frame holds 6 counters. Your child adds 2 counters, one per empty box. How many boxes are still empty?
  1. 2 boxes
  2. 8 boxes
  3. 3 boxes
  4. 4 boxes
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Question 6 of 10

Nine toy fish include 5 orange fish and the rest white. Your child puts the orange fish on another mat, then says there are only 4 fish altogether. What do the groups show?
  1. Four fish in all, with 5 no longer counted.
  2. Four white fish, with 9 across both mats.
  3. Five white fish, with 9 across both mats.
  4. Nine white fish, with 5 on the other mat.
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Question 7 of 10

One story has 4 toy trains with 2 more joining. A second has 4 toy birds with 2 flying away. What final numbers and actions explain why the answers differ?
  1. 6 trains and 6 birds; both groups gain 2.
  2. 2 trains and 6 birds; trains lose 2 and birds gain 2.
  3. 6 trains and 2 birds; trains gain 2 and birds lose 2.
  4. 6 trains and 3 birds; trains gain 2 and birds lose 1.
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Question 8 of 10

Your child carefully counts the toys but needs time to move each one. What could you say to encourage the useful counting?
  1. "Try saying the answer before you touch them."
  2. "Try keeping your hands still while you guess."
  3. "Try finishing before I count to three."
  4. "You touched each toy once as you counted."
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Question 9 of 10

A child tells a story about 5 bears with 2 leaving. Their toys show 3 left. Their fingers show 2 up after folding down 3. What needs changing to show the same story both ways?
  1. Keep the fingers and remove 3 toy bears.
  2. Keep the toys and begin with 4 fingers.
  3. Keep the fingers and add another toy bear.
  4. Keep the toys and fold down only 2 fingers.
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Question 10 of 10

Your child counts 8 toy dolphins, moves 5 away, and counts 3 left. How can putting toys back check this answer?
  1. Return the 5 removed and count all 8.
  2. Return the 3 remaining and count 5.
  3. Return just 1 removed and count 4.
  4. Move the 3 remaining away and count none.
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Stuck on your own question? Homework Help

Key Terms

36 Key Terms, each with its definition

A

Acting out
Acting out means doing what a number story says with toys or bodies, then counting to find the answer.
Try acting out a bus story by moving teddy bears on and off chairs.
Add-to story
An add-to story begins with a group and tells how more things arrive, then asks how many there are now.
In an add-to story, 2 bears sit down and another bear joins them.
Adding
Adding finds how many there are when more things join a group or two groups are counted together.
Try adding with toy trains: let your child join the cars and count them all.
Altogether
Altogether means all the objects in the groups being counted, including the things already there.
With blocks in two piles, ask, "How many blocks are there altogether?" while pointing around both piles.

C

Count
A count gives one number to each object in order, with the final number telling how many there are.
Slow the count so each block receives one number as your child touches it.
Counter
A counter is a movable object that stands for one thing in a story or fills one space in a frame.
Use a small block as a counter for each bird in a story about birds.
Counting all
Counting all means starting at 1 and counting every object in the joined group to find the total.
Your child uses counting all when they touch both groups of ducks from 1.
Counting back
Counting back starts from a group number and says one previous number for each object taken away.
From 5, counting back 2 gives "four, three" as the objects leave.
Counting on
Counting on starts from a known group number and says one next number for each object added.
From 4, counting on 2 gives "five, six" as the new objects join.
Counting step
A counting step is one move to the next or previous number, matched to one object joining or leaving.
The first counting step after 6 is 7 when an object joins the group.

D

Dot drawing
A dot drawing shows each story object with a simple dot, adding or crossing out dots to show the action.
In a dot drawing of birds flying away, count only the dots without crosses.

F

Fewer
Fewer describes a smaller number of objects; a group has fewer objects after some are taken away.
Say, "There are fewer bears on the bus," after a passenger gets off.
Finger model
A finger model uses raised fingers for objects, raising more to add or folding some down to take away.
Make a finger model of 4 birds, then fold down 1 finger when a bird leaves.
First
First names how many objects are there at the start of a changing number story.
Say, "First, 3 frogs sat on a log," and wait for your child to show them.
Five frame
A five frame is one row of 5 boxes, with room for one counter in each box.
Put 4 counters in a five frame, then add 1 to fill the last box.

G

Group
A group is a collection of things you are looking at or counting together, such as the toys on a mat.
Keep the group on the mat clear when some toys move into a box.

L

Last number
The last number in a careful count tells how many objects are in the whole group counted.
In "1, 2, 3, 4," the last number is 4, so there are 4 toys.
Left over
Left over means still in the place or group after some things have gone away.
Ask, "How many are left over on the plate?" and point to the things that stayed.

N

Now
Now points to the group at the end of the story, after the action has happened.
Ask, "How many frogs are on the log now?" after your child finishes moving them.
Number path
A number path is a row of numbered spaces that shows counting forward or backward through moves.
Start on 4 on a number path, then move forward 1 space to land on 5.
Number story
A number story is a short story with a question about how many, also called a story problem or word problem.
Tell a number story about toy animals joining a picnic or going home.
Number word
A number word is a spoken number name, such as "one" or "two," used in the counting order.
Say one number word for each toy your child slides across the table.

P

Part
A part is one smaller group within a whole, such as the blue crayons among all the crayons.
Count the blue part after sorting a group of red and blue crayons.
Pretend play
Pretend play makes an imagined scene real enough to act out, such as toys riding a bus.
During pretend play, a stuffed animal can eat some toy snacks while your child counts.
Put-together story
A put-together story asks how many are in two groups together, even when nothing new arrives.
A put-together story can ask about 3 red cups and 1 blue cup altogether.

R

Remaining objects
The remaining objects are the things still in the named group after some have been taken away.
Point to the remaining objects when you ask how many are still on the tray.
Removed objects
The removed objects are the things taken away from the starting group during the story.
Keep the removed objects in a box while your child counts what stayed.

S

Starting group
The starting group is the collection of objects there before anything joins or leaves.
Count the starting group of cars before your child drives any away.

T

Taking apart
Taking apart splits a whole group into parts while keeping all the objects in the whole.
Try taking apart with 5 socks sorted into striped socks and plain socks.
Taking away
Taking away means some objects leave a group, and you find how many are still there; it is also called subtracting.
Show taking away by driving toy cars from the table into a garage.
Ten frame
A ten frame is a grid with two rows of 5 boxes that can hold one counter in each box.
A ten frame with one full row and 2 more counters shows a group of 7.
Then
Then introduces what happens after the start, such as more things joining or some leaving.
Say, "Then, 1 frog jumped away," while your child moves that frog.
Total
A total is how many objects there are in all after counting the groups together.
Count the toys on both sides of the mat to find the total number playing.

W

Whole
The whole is the entire group, including every part you have split it into.
A whole of 9 crayons still has 9 crayons when they are sorted into two color piles.
Within ten
Within ten means the story uses whole-number amounts from zero to ten, including its starting group and answer.
A story within ten can start with 8 boats and finish with 6 after 2 leave.

Z

Zero
Zero is the number that tells how many objects are in an empty group; there are none.
After every bird flies away, say, "Zero birds are still on the fence."

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