3 x 4 x 5 = 3 x 4 + 5
2 x (3 x 4) = (2 x 3) x 4
3 x 4 = 4 x 3
5 x 3 = 3 x 5
(4 x 7) x 2 = 4 x (7 x 2)
5 x 2 = 5 x 5
(5 x 8) x 3 = 5 x (8 x 3)
3 x 10 = 10 x 3
4 x 4 x 4 = 4 x 3
