Вычисли, используя свойства умножения:
(9 * 2) * 5;
5 * (2 * 7);
3 * 5 * 6 * 2;
4 * 2 * 7 * 5;
(2 * 8) * (5 * 6);
2 * 2 * 5 * 5 * 5;
5 * 16;
25 * 4.
(9 * 2) * 5 = 9 * (2 * 5) = 9 * 10 = 90;
5 * (2 * 7) = (5 * 2) * 7 = 10 * 7 = 70;
3 * 5 * 6 * 2 = (3 * 6) * (5 * 2) = 18 * 10 = 180;
4 * 2 * 7 * 5 = (4 * 7) * (2 * 5) = 28 * 10 = 280;
(2 * 8) * (5 * 6) = (8 * 6) * (2 * 5) = 48 * 10 = 480;
2 * 2 * 5 * 5 * 5 = 5 * (2 * 5) * (2 * 5) = 5 * 10 * 10 = 500;
5 * 16 = 5 * (2 * 8) = (5 * 2) * 8 = 10 * 8 = 80;
25 * 4 = (5 * 5) * (2 * 2) = (5 * 2) * (5 * 2) = 10 * 10 = 100.