Show:
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+1

What is 13

300

4 x 9+5

What is 41

300

6 x 4+3

What is 27

300

7 x 7+5

What is 54

300

8 x 8+3

What is 67

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+5

What is 29

500

4 x 7+0

What is 28

500

6 x 9+10

What is 64

500

7 x 10+5

What is 75

500

8 x 10+6

What is 86