Show:
2X
3X
4X
5X
6X
7X
8X (optional)
100

1X2

1X2=2


100

1X3

1X3


100

1X4=?

1x4=4


100

1X5

1X5=5


100

1X6=?

1X6-=6


100

1X7

1X7=7


100

1X8=?


1X8=8

200

2X2

2X2=4


200

2X3=?


2x3=6

200

2x4=?


2X4=8

200

2x5=?

2x5=10


200

2x6=?

2x6=12

200

2x7=?

2x7=14

200

2x8=?

16


300

2x3

2x3=6


300

3x3=?


3x3=9


300

4x3=?

4x3=12


300

3x5=15

3x5=15


300

6x3=?

6x3=18

300

3x7=?

3x7=21

300

3x8=?

3x8=24

400

2x4=?

2x4=8


400

3x4

3x4=12


400

4x4=?

4x4=16\

400

5x4=?

5x4=20


400

6x4=?

6x4=24

400

7x4=?

7x4=28

400

4x8=?

4x8=32

500

2x6=?

2x6=12

500

3x6=?


3x6=18

500

4x6=?

4x6=24


500

5x5=?

5X5=25

500

5x6=?

5x6=30


500

7x5=?

7x5=35

500

5x8=?

5x8=40