Предмет: Математика, автор: olesyabronniko1

Тема: Сравнение дробей. Правильные и не правильные дроби.
Найдите сумму 2/5+30 и 7/4+28
Найдите разность 11/7-77 и 2/5-40

Ответы

Автор ответа: juliika2001

1

1) 2/5 +30 = 30 2/5

2) 7/4 +28 = 1 3/4 + 28 = 29 3/4 (неправильную дробь перевели в смешанное число и складываем целые части, добавляя потом дробную часть)

3) 11/7 - 77 = -77 +11/7 = -76 7/7 + 1 4/7 = -75 3/7

4) -40 +2/5 = -39 5/5 +2/5 = -39 3/5

olesyabronniko1: Спасибо большое

juliika2001: пожалуйста

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