Предмет: Математика, автор: sauk1987

Когда на стоянку приехало 15 машин , а потом еще 13 , на стоянке стало 52имашины.Сколько машин было на стоянке?

Ответы

Автор ответа: Alyssa08

Краткая запись:

Было - ? м.

Приехало - 13 м. и потом ещё 15 м.

Стало - 52 м.

Решение:

1) 13 + 15 = 28 (м.) - всего приехало на стоянку

2) 52 - 28 = 24 (м.)

Проверка:

Было - 24 м.

Приехало - 13 м. и потом 15 м.

Стало - ? м.

1) 13 + 15 = 28 (м.) - всего приехало на стоянку

2) 24 + 28 = 52 (м.) - стало на стоянке - верно!

Ответ: 24 машины было на стоянке

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