Subtraction within 20 Review

Subtraction

100

15-5=

10

200

19-7=

12

300

17-4=

13

400

16-8=

8

500

12-8=

4

Word Problems

100

John has 16 stickers. He gives his friend 10 stickers. How many stickers does John have left? 

6 stickers

200

Rudy has 13 sandwiches. He ate 5 of them. How many  sandwiches does Rudy have left?

8 sandwiches

300

Lisa has 18 pencils. 6 of them are sharp and the rest are dull. How many pencils are dull?

12 dull pencils 

400

Ross has 19 books. He read 8 of them. How many books did Ross not read?

11 books

500

Monica has 20 pieces of paper. She needs 12 for an art project. How many pieces of paper does Monica have left?

8 pieces of paper 

What can be done on a number line?

100

What can we do on the number line? 

10-2

A. start at 10 and count back 2

B. start at 10 and count on 2 

C. start at 2 and count back 10 

D. start at 2 and count on 10 

A. start at 10 and count back 2 

200

What can be done on the number line? 

19-5 

A. start at 5 and count on 19 

B. start at 19 and count on 5 

C. start at 19 and count back 5

D. start at 5 and count back 19 

C. start at 19 and count back 5 

300

What can be done on the number line?

15-7 

A. start at 15 and count on 7 

B. start at 7 and count on 15 

C. start at 7 and count back 15 

D. start at 15 and count back 7

D. start at 15 and count back 7 

400

What can be done on the number line?

12-6

A. start at 6 and count back 12 

B. start at 12 and count back 6 

C. start at 6 and count on 12 

D. start at 12 and count on 6 

B. start at 12 and count back 6 

500

What can be done on the number line?

16-4

A. start at 16 and count back 4 

B. start at 16 and count on 4 

C. start at 4 and count back 16

D. start at 4 and count on 16 

A. start at 16 and count back 4

Related Addition facts

100

Which addition fact is related to the subtraction fact?

12-3=9

A. 3+3=6

B. 3+9=12

C. 9+6=15

D. 12+5= 17

B. 3+9=12

200

Which addition fact is related to the subtraction fact?

15-5=10

A. 9+4= 13 

B. 13+3=16 

C. 10+5=15 

D. 10+10=20

C. 10+5=15

300

Which addition fact is related to the subtraction fact?

20-2=18

A. 13+3=16 

B. 20-5=15 

C. 2+2=4 

D. 18+2=20

D. 18+2=20

400

Which addition fact is related to the subtraction fact?

14-8=6

A. 6+6=12

B. 8+6=14

C. 8+10=18 

D. 18+2=20

B. 8+6=14

500

Which addition fact is related to the subtraction fact?

17-6=11

A. 12+2=14

B. 10+10=20

C. 11+5=16

D. 11+6=17

D. 11+6=17

Missing Subtrahends

100

14-_____=10

4

200

17-____=14

3

300

20-____=11

9

400

12-____=9

3

500

19-____=12

7