door Stevan SD 4 jaren geleden
202
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18 x 1 = 18
12 + 0 = 12
(3 • 5) • 7 = 3 • (5 • 7).
5 x (7 + 2) = 45 ó 5 x 7 + 5 x 2 = 45
6 x (4 x 3) = 72 ó (6 x 4) x 3 = 72
6 + (4 + 3) = 13 ó (6 + 4) + 3 = 13
3 x 5 = 15 ó 5 x 3 = 15
3 + 5 = 8 ó 5 + 3 = 8