Question

8. Вычисли, используя сочетательное и переместительное свойства умножения.(4•9)•25(2•8)•5025•(7•4)40•(5•3)(2•4)•505•(12•2)пжжжжжжжжжжжжжжж35 баллов​

Answer 1

(4 ⋅ 9) ⋅ 25 = (25 ⋅ 4) ⋅ 9 = 100 ⋅ 9 = 900

(2 ⋅ 8) ⋅ 50 = (50 ⋅ 2) ⋅ 8 = 100 ⋅ 8 = 800

25 ⋅ (7 ⋅ 4) = (25 ⋅ 4) ⋅ 7 = 100 ⋅ 7 = 700

40 ⋅ (5 ⋅ 3) = (40 ⋅ 5) ⋅ 3 = 200 ⋅ 3 = 600

(2 ⋅ 4) ⋅ 50 = (50 ⋅ 2) ⋅ 4 = 100 ⋅ 4 = 400

5 ⋅ (12 ⋅ 2) = (5 ⋅ 2) ⋅ 12 = 10 ⋅ 12 = 120

Answer 2

Для вычисления данного выражения сначала разберемся с умножением чисел с использованием сочетательного и переместительного свойств умножения:

1. (4 * 9) * 25 = 36 * 25 = 900
2. (2 * 8) * 50 = 16 * 50 = 800
3. 25 * (7 * 4) = 25 * 28 = 700
4. 40 * (5 * 3) = 40 * 15 = 600
5. (2 * 4) * 50 = 8 * 50 = 400
6. 5 * (12 * 2) = 5 * 24 = 120

Теперь, собрав все результаты вместе:

900 + 800 + 700 + 600 + 400 + 120 = 3520

Ответ: 3520.