Выполнить вычисления по образцу.

23 × 4 = (20 + 3) × 4 = 20 × 4 + 3 × 4 = 80 + 12 = 92; 17 × 3 = (10 + 7) × 3 = 10 × 3 + 7 × 3 = 30 + 21 = 51; 6 × 16 = 6 × (10 + 6) = 6 × 10 + 6 × 6 = 60 + 36 = 96; 12 × 7 = (10 + 2) × 7 = 10 × 7 + 2 × 7 = 70 + 14 = 84.