x3
x4
x6
x7
x8

100

2 x 3
What is 6

100

4 x 2
What is 8

100

6 x 3
What is 18

100

3 x 7
What is 21

100

8 x 9
What is 72

200

3 x 3
What is 9

200

4 x 4
What is 16

200

6 x 8
What is 48

200

7 x 8
What is 56

200

8 x 7
What is 56

300

3 x 4
What is 12

300

4 x 9
What is 36

300

6 x 4
What is 24

300

7 x 7
What is 49

300

8 x 8
What is 64

400

6 x 3
What is 18

400

4 x 9
What is 36

400

6 x 6
What is 36

400

7 x 6
What is 42

400

8 x 4
What is 32

500

8 x 3
What is 24

500

4 x 7
What is 28

500

6 x 9
What is 54

500

7 x 10
What is 70

500

8 x 10
What is 80