Multiplication
Adding
subtracting
100

5x5

25

100

2+2

4

100

5-5

0
200

8x8

64


200

3+3

6

200

10-5

5

300

9x9

81

300

4+4

8
300

20-15

5

400

10x10

100

400

5+5

10

400

30-15

15

500

4x4

16

500

6+6

12

500

40-20

20

M
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