Show:
Addition without Regrouping
Addition with Regrouping
Subtraction without Regrouping
Subtraction with Regrouping
Multiplication
100

10+10

20
100

12+19

31

100

20-9

11

100

31-19

12

100

3x4

12

200

24+23

47

200

29+36

65

200

36-6

30

200

57-48

8

200

5x5

25

300

37+31

68

300

45+36

81

300

47-25

22

300

64-29

35

300

6x8

48

400

42+46

88

400

56+82

138

400

56-33

23

400

71-16

55

400

7x7

49

500

66+23

89

500

92+18

110

500

96-45

51

500

120-52

68

500

11x9

99