Б) 5×9×2×5×2 = 5² × 9 × 2² = 5² × 4 × 9 = 5² × 4 × 3² = 5² × 3 × 2² × 4 = 5² × 3² × 2² × 4 = 5³ × 2²в) 7×84 + 7×16 = 7(84+16) = 7×100 = 700г) 632 - (532 + 68) = 632 - 532 - 68 = 100 - 68 = 32д) (857 + 96) - 357 = 857 + 96 - 357 = 953 - 357 = 596
Б) 5×9×2×5×2 = 5² × 9 × 2² = 5² × 4 × 9 = 5² × 4 × 3² = 5² × 3 × 2² × 4 = 5² × 3² × 2² × 4 = 5³ × 2²
в) 7×84 + 7×16 = 7(84+16) = 7×100 = 700
г) 632 - (532 + 68) = 632 - 532 - 68 = 100 - 68 = 32
д) (857 + 96) - 357 = 857 + 96 - 357 = 953 - 357 = 596