Запишем последовательность вычисления произведений.
32 * 3 = (30 + 2) * 3 = 30 * 3 + 2 * 3 = 90 + 6 = 96
7 * 12 = 7 * (10 + 2) = 7 * 10 + 7 * 2 = 70 + 14 = 84
27 * 3 = (20 + 7) * 3 = 20 * 3 + 7 * 3 = 60 + 21 = 81
Ответ: 32 * 3 = (30 + 2) * 3 = 30 * 3 + 2 * 3 = 90 + 6 = 96; 7 * 12 = 7 * (10 + 2) = 7 * 10 + 7 * 2 = 70 + 14 = 84; 27 * 3 = (20 + 7) * 3 = 20 * 3 + 7 * 3 = 60 + 21 = 81