Предмет: Математика, автор: tsorokjha13082017

помогите решить задачу! 7 одинаковых открыток стоят 56 рублей.сколько будут стоить 5 открыток? Сколько можно купить на 15 рублей .

Ответы

Автор ответа: kabdyrakmanova07
1

Дано:

7 откр. - 56 руб.

Найти:

5 откр. - ? руб.

? откр. - 15 руб.

Решение:

1) 56:7=8 руб.- цена 1 откр.

2) 5•8=40 руб. - цена 5 откр.

3) 15:8= 1 откр. (7 руб. остаток) - кол-во откр. на 15 руб.

Ответ: 40 руб., 1 откр.

Автор ответа: Vikaboligor
1

Ответ: 1) 56 : 7 = 8 ( руб ) - 1 открытка

2) 8 • 5 = 40 ( руб ) - 5 открыток

3) 15:8 = 1 остаток 7 ( открытку ) - можно купить за 15 рублей

Ответ : 8 рублей стоит одна открытка, 40 рублей стоят 5 открыток, 1 открытку можно купить за 15 рублей

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