Understanding Subtraction

subtraction

100

If 12 + 7 = 19 then                  .

a. 19 + 7 = 12

b. 19 - 7 = 12

c. 19 + 12 = 7

d. 19 - 12 = 6

b. 19 - 7 = 12

200

If 13 + 7 = 20 then                  .

a. 20 + 7 = 13

b. 20 + 13 = 7

c. 20 - 7 = 13

d. 20 - 13 = 6

c. 20 - 7 = 13

300

If 10 + 7 = 17  then                  .

a. 17 - 10 = 6

b. 17 + 7 = 10

c. 17 + 10 = 7

d. 17 - 7 = 10

d. 17 - 7 = 10

400

If 15 + 7 = 22  then                  .

a. 22 - 15 = 6

b. 22 + 7 = 15

c. 22 + 15 = 7

d. 22 - 7 = 15

d. 22 - 7 = 15

500

If 9 + 7 = 16  then                  .

a. 16 - 9 = 6

b. 16 + 7 = 9

c. 16 + 9 = 7

d. 16 - 7 = 9

d. 16 - 7 = 9

missing addend

100

Which answer can help you solve 15 - 5 =

a. 15 + 5 = 20

b. 10 + 5 = 15

c. 15 + 10 = 25

b. 10 + 5 = 15

200

Which answer can help you solve 16 - 5 =

a. 16 + 5 = 21

b. 16 + 11 = 25

c. 11 + 5 = 16

c. 11 + 5 = 16

300

Which answer can help you solve  11 - 5 =

a. 11 + 5 = 16

b. 16 + 11 = 27

c. 6 + 5 = 11

c. 6 + 5 = 11

400

Which answer can help you solve  14 - 5 =

a. 9 + 5 = 14

b. 14 + 5 = 19

c. 19 + 14 = 38

a. 9 + 5 = 14

500

Which answer can help you solve  13 - 5 =

a. 8 + 5 = 13

b. 13 + 5 = 18

c. 8 + 13 = 21

a. 8 + 5 = 13

Fill in the Blanks

100

10 -  5   =

5 +      = 10

5

200

13 -  5   =

5 +      = 13

8

300

14 -  5   =

5 +      = 14

9

400

16 -  5   =

5 +      = 16

11

500

9 -  5   =

5 +      = 9

4

story problems

100

If Bob has 8 peices of candy how many more does he need to make 15?

15-8= 

7

200

If Bob has 7 peices of candy how many more does he need to make 15?

15-7= 

8

300

If Bob has 6 peices of candy how many more does he need to make 15?

15-6= 

9

400

If Bob has 5 peices of candy how many more does he need to make 15?

15-5= 

10

500

If Bob has 4 peices of candy how many more does he need to make 15?

15-4= 

11