Addition
Subtraction
Double Digits
Double Digits
Mystery
100

5 + 4 =

9

100

10 - 1 =

9

100

26  + 10

36

100

14 + 15 =

29

100

123 + 123

246

200

11 + 2 =

13

200

15 - 7 =

8

200

55 + 23 =

78

200

35 + 15 =

50

200

130 + 87 =

217
300

12 + 8 =

20

300

8 - 6 =

2

300

43  + 15 =

58

300

52 + 38 =

90

300

300 + 78=

378

400

9 + 8 =

17

400

11 - 8 =

3
400

66 + 39 =

105

400

58 + 48 =

106

400

500 + 518 =

1, 018

500

12 + 7 =

19

500

12 - 5 =

7
500

85 + 44 =

129

500

99 + 20 =

119

500

524 + 345 =

869

M
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