Examples m x n = n x m 5 x 8 = 8 x 5 = 40 3/5 x 2/9 = 2/9 x 3/5 = 2/15 a x b x c = b x c x a = c x a x b = b x a x c 2.3 x 10 = 10 x 2.3 = 23 7.8 x 2/39 = 2/39 x 7.8 = 0.4
ตัวอย่าง m x n = n x m 5 x 8 = 8 x 5 = 40 3/5 x 2/9 = 2/9 x 3/5 = 2/15 x b x c = b x c x ตัว = c x x b = b x x c 2.3 x 10 = 10 x 2.3 = 23 9.2 x 2/39 = 2/39 x 7.8 = 0.4
M x N = N x M 5 x 8 = 8 x 5 = 40 3 / 5 x 2 / 9 = 2 / 9 x 3 / 5 = 2 / 15 a x b x c = b X C = C X X X X X c b = b 2.3 x 10 = 10 x 2 = 23 8 x 2 = 2 / 39 / 39 x 7.8 = 0.4