Use Grouping
5x4=
20
2x3=
6
6x5=
30
20 divide 5=
4
45, 5, and 9
9x5=45
5x9=45
45 divided by 9=5
45 divided by 5=9
3x4=
12
4x2=
8
4x1=
4
21 divide 7=
3
21, 7, and 3
7x3=21
3x7=21
21 divided by 7=3
21 divided by 3=7
5x6=
30
6x7=
42
9x9=
81
54 divide 6=
9
56, 7, and 8
8x7=56
7x8=56
56 divided by 7=8
56 divided by 8=7
9x2=
18
7x0
0
8x2=
16
36 divided by 6=
6
16, 8, and 2
8x2=16
2x8=16
16 divided by 8=2
16 divided by 2=8
8x4=
32
6x3=
18
7x5=
35
30 divided by 10=
3
40, 5, and 8
5x8=40
8x5=40
40 divided by 8=5
40 divided by 5=8