Adding
Adding with Composition
Subtracting
Subtracting with Decomposition
RANDOM!
100
25 + 32

57

100

56 + 38

94

100

74 - 41

33

100

65 - 37

28

100

100 - 53

47

200

72 + 21

93
200

48 + 36

84

200

87 - 45

42

200

46 - 29

17

200

37 + 38

75

300

44 + 45

89
300

29 + 29

58

300

92 - 42

50

300

62 - 38

24

300

76 - 21

55

400

70 + 27

97

400

38 + 53

91

400

64 - 24

30

400

83 - 39

44

400

231 + 40

271

500

42 + 42

84

500

81 + 19

100

500

87 - 77

10
500

76 - 29

47

500

471 - 394

77

M
e
n
u