Вычисли, используя свойства умножения:
2 * (76 * 5);
(5 * 23) * 2;
9 * 2 * 5 * 9;
2 * 5 * 8 * 8;
7 * (2 * 7) * 5;
(3 * 2) * (5 * 5);
12 * 15;
45 * 18.
2 * (76 * 5) = 76 * (2 * 5) = 76 * 10 = 760;
(5 * 23) * 2 = 23 * (5 * 2) = 23 * 10 = 230;
9 * 2 * 5 * 9 = (9 * 9) * (2 * 5) = 81 * 10 = 810;
2 * 5 * 8 * 8 = (8 * 8) * (2 * 5) = 64 * 10 = 640;
7 * (2 * 7) * 5 = (7 * 7) * (2 * 5) = 49 * 10 = 490;
(3 * 2) * (5 * 5) = (3 * 5) * (2 * 5) = 15 * 10 = 150;
12 * 15 = (2 * 6) * (3 * 5) = (6 * 3) * (2 * 5) = 18 * 10 = 180;
45 * 18 = (9 * 5) * (9 * 2) = (9 * 9) * (5 * 2) = 81 * 10 = 810.