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Addition
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100

Solve for the variable:

x + 2 = 8

x = 6

100

Solve for the variable:

x - 3 = 18

x = 21

100

Solve for the variable:

2*k = 12

k = 6

100

___ + 7 = 10

3

100

6 * 7 = ___

42

200

Solve for the variable:

m + 4 = 12

x = 8

200

Solve for the variable:

f - 4 = 7

f = 11

200

Solve for the variable:

3*m = 12

m = 4

200

12 + ___ = 19

7

200

9 * 3 = ___

27

300

Solve for the variable:

p + 12 = 23

x = 11

300

Solve for the variable:

n - 5 = 18

n = 23

300

Solve for the variable:

5*x = 35

x = 7

300

6 + ___ = 15

7

300

6 * 6 = ___

36

400

Solve for the variable:

17 = x + 9

x = 8

400

Solve for the variable:

k - 9 = 20

k = 29

400

Solve for the variable:

2*b = 22

b = 11

400

20 = 11 + ___

9

400

8 * 8 =___

64

500

Solve for the variable:

20 = h + 3

h = 17

500

Solve for the variable:

14 = x - 5

x = 19

500

Solve for the variable:

63 = 9*x

x = 7

500

37 = ___ + 16

21

500

9 * 9 = ___

81