Предмет: Математика, автор: k1ketz1337

Почему 3 делить на 0.4 получается 7.5? Объясните, пожалуйста.

Ответы

Автор ответа: dnepr1

1

3 делить на 0.4 - это дробь.По правилу дроби числитель и знаменатель её можно умножить или разделить на одно и то же число.
Умножим на 10:
$\frac{30}{4} =7,5$

k1ketz1337: спасибо)

Автор ответа: ОтЛиЧнИцАа2015

0

число нельзя делить на дробь. переносим запятую. значит 3 : 0.4= 30 : 4=7.5

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