Show:
2 digit by 1 digit
2 digit by 2 digit
3 digit by 2 digit
adding 3 numbers
adding 4 numbers
100

12+8

20

100

44+63

107

100

100+19

119

100

3+7+9+5

24

100

9+3+1+8

21

200

34+7

41

200

37+ 54

91

200

114+17

131

200

12+18+21

51

200

23+41+33+17

114

300

46+5

51

300

95+33

128

300

123+27

150

300

34+15+56

105

300

48+11+32+15

106

400

83+9

92

400

85+49

134

400

128+39

167

400

76+44+32

152

400

43+51+34+11

139

500

98+8

106

500

68+79

147

500

188+55

243

500

121+63+89

273

500

141+253+54+22

470