Show:
x3
x4
x6
x7
x3, 4, 6, or 7
100

3 x 7 =

21

100

5 x 4 =

20

100

6 x 10 =

60

100

7 x 2 =

14

100

3 x 3 =

9

200

3 x 6 =

18

200

4 x 4 =

16
200

4 x 6 =

24

200

7 x 5 =

35

200

10 x 4 =

40

300

3 x 11 =

33

300

9 x 4 =

36

300

8 x 6 =

48

300

7 x 6 =

42

300

5 x 6 =

30

400

9 x 3 =

27

400

7 x 4 =

28

400

6 x 6 =

36

400

7 x 7 =

49

400

11 x 7 =

77

500

8 x 3 =

24

500

4 x 8 =

32

500

6 x 7 =

42

500

7 x 8 =

56

500

4 x 12 =

48