Вычисли, используя законы умножения:
5 * (6 * 9);
(4 * 7) * 5;
(5 * 3) * (3 * 8);
6 * (5 * 5) * 4;
45 * 6;
12 * 25.
5 * (6 * 9) = 5 * (2 * 3 * 9) = (5 * 2) * (3 * 9) = 10 * 27 = 270;
(4 * 7) * 5 = (2 * 2 * 7) * 5 = (2 * 7) * (2 * 5) = 14 * 10 = 140;
(5 * 3) * (3 * 8) = (5 * 3) * (3 * 4 * 2) = (5 * 2) * (3 * 3 * 4) = 10 * (9 * 4) = 10 * 36 = 360;
6 * (5 * 5) * 4 = (2 * 3) * (5 * 5) = (3 * 5) * (2 * 5) = 15 * 10 = 150;
45 * 6 = (5 * 9) * (2 * 3) = (3 * 9) * (5 * 2) = 27 * 10 = 270;
12 * 25 = (2 * 2 * 3) * (5 * 5) = 3 * (2 * 5) * (2 * 5) = 3 * 10 * 10 = 300.
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