Математика 5 класс учебник Дорофеев, Шарыгин, Суворова ответы - номер 320

  • Тип: ГДЗ, Решебник.
  • Автор: Г. В. Дорофеев, И. Ф. Шарыгин, С. Б. Суворова.
  • Год: 2020.
  • Издательство: Просвещение.
Решение — упражнение 320. Готовое домашнее задание

Номер 320.

Преобразуйте произведение и вычислите его значение:
а) 75 ⋅ 14 ⋅ 18;
б) 16 ⋅ 125 ⋅ 4 ⋅ 35.

Ответ:

а) 75 ⋅ 14 ⋅ 18 = (25 ⋅ 5) ⋅ (7 ⋅ 2) ⋅ (2 ⋅ 9) = (25 ⋅ 2 ⋅ 2) ⋅ (3 ⋅ 7 ⋅ 9) = 100 ⋅ 189 = 18 900
б) 16 ⋅ 125 ⋅ 4 ⋅ 35 = (8 ⋅ 2) ⋅ 125 ⋅ 4⋅ (5 ⋅ 7) = (8 ⋅ 125) ⋅ (2 ⋅ 5) ⋅ (4 ⋅ 7) = 1 000 ⋅ 10 ⋅ 28 = 280 000

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