Кузнецов Вячеслав а) 15 * 100 + 79 = 1579 209 * 100 - 900 = 20000 304 * 100 + 357 = 30757 738 * 100 - 3800 = 70000 б)39 * 100 + 410 * 100 = (? + ?) * 100 = 8000 735 * 27 + 735 * 73 = 735 * (27 + 73) = 73500 901 * 34 + 901 * 66 = 901 * (34 + 66) = 90100