Addition and Subtraction to 20

Addition

100

12+3=__

15

200

11+5=__

16

300

12+7=__

19

400

13+7=__

20

500

10+9=__

19

Subtraction

100

14-4=__

10

200

16-5=_

11

300

18-9=_

9

400

19-6=_

13

500

20-8=_

12

Find the Missing Number

100

12-_=12

0

200

10+_=19

9

300

_-7=7

14

400

_+9=17

8

500

14-_=8

6

Adding & Subtracting

100

6+9=

6+9=15

200

20-10=

20-10=10

300

16-8=

16-8=8

400

12+4=

12+4=16

500

7+4+2=

7+4+2=13

Real World Problems

100

John has 18 stickers in his backpack. He gives 7 stickers away to his friends. How many stickers does he have now? Johnny has ____ stickers.

11 stickers

200

Jan has 14 erasers in her desk. One of her friends gave her 6 more erasers. How many erasers does Jan have now? Jan has ____ erasers.

20 erasers

300

Bob buys 12 pencils. His mom buys him 6 more pencils. How many pencils does Bob have now? Bob has___ pencils.

18 pencils

400

Mike has 15 red and black markers. He has 5 red markers. How many black markers does Mike have? Mike has __ black markers.

10 black markers

500

Ava had 20 crayons in her crayon box. Ava now only has 9 crayons. How many crayons did Ava lose? Ava lost ___ crayons?

11 crayons