a) 37 × 12 + 37 × 88 = 37 × (12 + 88) = 37 × 100 = 3700
в) 37 × 12 - 37 × 2 = 37 × (12 - 2) = 37 × 10 = 370
д) 28 × 9 + 22 × 9 = (28 + 22) × 9 = 50 × 9 = 450
ж) 18 × 9 + 18 × 1 = 18 × (9 + 1) = 18 × 10 = 180
и) 101 × 17 - 17 = 100 × 17 = 1700
