/ ?
3 / ? = 3
3 / 1 = 3
2X4
2X4=8
4, 6, 8, 10
4, 6, 8, 10
by 2
6x3
6x3=18
1X7
1x7=7
21 / ? = 7
21 / 3 = 7
2x3
2X3=6
10, 20, 30, 40
10, 20, 30, 40
by 10
6x4
6x4=24
2x7
2x7=14
28 / ? = 7
28 / 4 = 7
4x4
4x4=16
12, 16, 20, 24
12, 16, 20, 24
by 4
6x5
6x5=30
3x7
3x7=21
36 / ? = 6
36 / 6 = 6
4x6
4x6=24
6, 9, 12, 15
6, 9, 12, 15
By 3
6x7
6x7=42
4x7
4x7=28
40 / ? = 10
40 / 4 = 10
4x7
4x7=28
24, 30, 36, 42
24, 30, 36, 42
by 6
6x2
6x2=12
5x7
5x7=35