Simple Subtraction

Front 1

45 - 40 =

Back 1

5

Front 2

70 - 45 =

Back 2

25

Front 3

15 - 12 =

Back 3

3

Front 4

51 - 25 =

Back 4

26

Front 5

66 - 34 =

Back 5

32

Front 6

74 - 54

Back 6

20

Front 7

59 - 29 =

Back 7

30

Front 8

24 - 12 =

Back 8

12

Front 9

65 - 27 =

Back 9

38

Front 10

77 - 44 =

Back 10

33

Front 11

68 - 60 =

Back 11

8

Front 12

49 - 22 =

Back 12

27

Front 13

16 - 7 =

Back 13

9

Front 14

2 - 2 =

Back 14

0

Front 15

39 - 26 =

Back 15

13