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Addition
Subtraction
Adding Decimals
Subtracting Decimals
One-Step Equations
100

9+7

16

100

12-7

5

100

3.1 + 4

7.1

100

9.6 - 4.2

5.4

100

x-5 = 13

x = 18

200

17+8

25

200

37-18

19

200

17.2 + 6.8

24

200

16.7 - 5.9

10.8

200

x+45 = 90

x = 45

300

36 + 45

81

300

78-59

19
300

68.7 + 53.5

122.2

300

36.4-18.32

18.08

300

x - 13.7 = 123.45

x = 137.15

400

193 + 277

470

400

243-168

75

400

497.6 + 476.82

974.42

400

567.81 - 387.43

189.38

400

x + 78.98 = 120

x = 41.02

500

3276 + 1939

5215

500

2537-899

1638

500

3754.6 + 2974.37

6728.97

500

5406.08 - 3724.9

1681.18

500

x + 3200.8 = 6004.56

x = 2003.76