How many are left?
How many are there now?
Missing Numbers
sum
100

5 - 4 =

1

100

There are 3 cats. 1 cat walks away. _____ cats now.

2 cats now.

100

Mary has 6 cups. 2 cups are big. The rest are small. How many cups are small?

4 small cups

100

What is the sum of 1 and 4?

5

200

4 - 2 =

2

200

There are 5 horses. 2 horses walk away. _____ horses now.

3 horses now.

200

There are 5 books. 1 book is red. The rest are yellow. How many books are yellow?

4 yellow books

200

What is the sum of 2 and 5?

7

300

5 - 2 = ___

3

300

There are 7 dogs. 3 dogs walk away. _____ dogs now.

4 dogs now.

300

There are 6 blocks. 3 blocks are small. The rest are big. How many blocks are big.

3 big blocks.

300

What is the sum of 3 and 3?

6

400

4 - 3 = ___

1

400

There are 7 birds. 2 birds fly away. _____ birds.

5 birds

400

3 ducks swim in the pond. 2 more join them. How many ducks are in the pond now?

5 ducks

400

What is the sum of 4 and 2?

6

500

3 - 1 = ____

2

500

There are 4 ducks. 2 ducks swim away. ____ ducks now.

2 ducks now.

500

There are 4 green grapes and 5 red grapes. How many grapes are there?

9 grapes

500

What is the sum of 5 and 5?

10

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