Show:
2 Addends
3 Addends
4 Addends
Mix Without Regrouping
Mix With Regrouping
100

23+43

66

100

25+6+24

55

100

36+12+21+26

95

100

37+10

47

100

9+8

17

200

54+29

83

200

13+12+16

41

200

14+23+20+11

68

200

20+45

65

200

16+15

31

300

16+34

50

300

26+3+30

59

300

29+31+11+3

74

300

33+34+32

99

300

47+21+7

75

400

42+56

98

400

12+32+7

51

400

5+12+41+22

80

400

10+42+36

88

400

25+25+25

75

500

65+66

131

500

15+16+23

54

500

34+10+31+22

97

500

32+21+15+30

98

500

13+26+44+12

95