Вычислите удобным способом:
1) 16 * 25;
2) 25 * 8 * 5;
3) 15 * 12;
4) 375 * 24.
16 * 25 = 4 * 4 * 25 = 4 * 100 = 400
25 * 8 * 5 = (25 * 4) * (2 * 5) = 100 * 10 = 1000
15 * 12 = 15 * 6 * 2 = 30 * 6 = 180
375 * 24 = 375 * 4 * 6 = 1500 * 6 = 9000