addition
addition
mix
subtraction
subtraction
100

10+7

17

100

7+9

16

100

6+5

11

100

15-9

6

100

11-7

4

200

20+13

33

200

27+23

50

200

13-7

6

200

27-15

12

200

57-23

34

300

37+17

54

300

89+5

94

300

40+32

72

300

58-47

11

300

73-65

8

400

27+37

64

400

74+25

99

400

82+54

136

400

60-17

43

400

82-47

35

500

84+43

127

500

65+96

161

500

77+86

163

500

84-28

56

500

93-27

66

M
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