Show:
Addition
Addition regroup
Subtraction
Subtraction regroup
Mixed
100

Stack and solve: 

25 +32

57

100

Stack and solve: 

35 + 28

63

100

Stack and solve: 

73 - 10

63

100

Stack and solve: 

62 - 45

17

100

Stack and solve: 

116 + 74

190

200

Stack and solve: 

72 + 14

86

200

Stack and solve: 

75 + 29

104

200

Stack and solve: 

98 - 56

42

200

Stack and solve: 

92 - 19

73

200

Stack and solve: 

147 + 28

175

300

Stack and solve: 

67 + 31

98

300

Stack and solve: 

47 + 29

76

300

Stack and solve: 

45 - 22

23

300

Stack and solve: 

75 - 46

29 

300

Stack and solve: 

191- 24

167

400

Stack and solve: 

47 + 32

79

400

Stack and solve: 

27 + 46

73

400

Stack and solve: 

89 - 52

37

400

Stack and solve: 

84 - 37

47

400

Stack and solve: 

38 + 71 + 12

121

500

Stack and solve: 

53 + 46

99

500

Stack and solve: 

68 + 39

107

500

Stack and solve: 

87 - 43

44

500

Stack and solve: 

60 - 25

35

500

Stack and solve: 

137 - 86

51