Math Review 1

Solve the subtraction equation 11-9=? and then choose an addition equation that helped you solve it.

• 9+2=11

• 2+8=10

• 8+3=11

• 10+5=15

Megan has 11 stickers. She uses 4 of them for an art project. Adam has 10 stickers. How many stickers should he use so he has the same number as Megan?

11-4=10-___

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Keri has 18 walnuts. She uses some of them to make muffins. Now there are 10 walnuts left. Write a subtraction equation to show many walnuts Keri uses.

• 18-9=9

• 18-7=11

• 18-8=10

• 18-6=12

How many fewer hamsters are there than turtles? Use an equation to help explain.

• 6-4=2

• 5-3=2

• 5+3=8

• 5+5=10

Lisa has 15 apples. She gives 5 to her friend. How many apples does she have left?

15-5=___

• 11

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There are 20 birds in a tree. 7 fly away. How many birds are still in the tree?

20-7=___

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Tom has 8 marbles. He finds 3 more. How many marbles does he have now?

8+3=___

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• 11

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Sarah has 20 candies. She eats 4 and gives 6 to her brother. How many candies does she have left?

20-4-6=___

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What is the result of the addition equation 7+5=? and which subtraction equation can help you verify it?

• 12-5=7

• 14-7=7

• 11-4=7

• 13-6=7

Tom has 15 apples. He gives 5 apples to his friend. How many apples does Tom have now?

15-5=___

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