Предмет: Математика, автор: nataligalus66

зал освещают 2 люстры в каждой люстре по 9 лампочек. Сколько лампочек в этих люстрах? Составь и реши две задачи, обратные данной. и как записать условия

Ответы

Автор ответа: evstifeeva07
6
2*9 = 18 лампочек в этих люстрах

В зале весят две люстры, общее количество лампочек в обеих люстрах равно 18, сколько ламп в каждой люстре.


Всего в зале 18 лампочек. Известно что в каждой люстре их равное количество и численно равно 9, сколько люстр в зале.
nataligalus66: как всё это записать
Автор ответа: Деспод228
10
Там получится,что всего 18 ламп...

Кол-во люстр-?шт
Кол-во ламп-18
Кол-во ламп в одной люстре-9
18:9=2 люстры...

Кол-во люстр-2
Кол-во ламп-18
Кол-во ламп в одной люстре-?шт
18:2=9 ламп...

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