Fluently Add and Subtract Within 20

A pet store had 12 fish. Then 3 fish were sold. The next day, 4 more fish were sold. How many fish does the store have now?

• 5

• 9

• 7

• 2

Which have a sum of 18? Choose ALL that apply.

• 10+8

• 9+8

• 9+9

• 8+10

• 8+8

Nita has 14 grapes. She eats 6 grapes.

Which addition fact can help you find how many grapes Nita has left?

• 6+6=12

• 6+7=13

• 6+8=14

• 8+8=16

Use the ten-frames.

Show how to make a 10 to find 13-7.

Then complete the equation, 13-7=___

16+4=

• 20

• 18

• 22

• 14

14-8

• 6

• 22

• 7

• 23

17 - 8 =

• 8

• 10

• 9

• 24

14 - 12 =

• 26

• 20

• 2

• 12

John has 25 stickers. He gives 13 stickers to Sarah. How many stickers does John have left?

• 12: 1 ten and 2 ones

• 38: 20 tens and 18 ones

• 13: 13 ones

We can use subtraction to solve addition problems because subtraction is the "undoing" of addition.

• True

• False