Show:
math1
math2
math3
math4
math5
100

2x2

4

100

1+1

2

100

10x10

100

100

10x1

10

100

10x8

80

200

2x4

8

200

2+2

4

200

5x5

25

200

10x2

20

200

10x9

90

300

2x3

6

300

3+3

6

300

5x6

30

300

10x3

30

300

10x100

1000

400

2x5

10

400

3+4

7

400

5x7

35

400

10x4

40


400

10x30

300

500

5x5

25

500

10+10

20


500

5x8

40

500

10x5

50

500

10x50 

500