1 digit by 1 digit
2 digit by 1 digit
3 digit by 1 digit
2 digit by 2 digit (no borrowing)
2 digit by 2 digit (borrowing)
100

5-4

1

100

20-9

11

100

111-9

102

100

23-11

12

100

23-15

8

200

6-2

4

200

33-7

26

200

123-1

122

200

34-13

21

200

34-25

9

300

8-3

5

300

45-8

37

300

135-4

131

300

45-15

30

300

46-18

28

400

9-1

8

400

56-5

51

400

145-8

137

400

57-24

33

400

57-38

19

500

9-6

3

500

67-7

60

500

157-9

148

500

78-36

42

500

68-59

9

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