Предмет: Математика, автор: Аноним

Помогите плиззз)))))))Задача№1: В 100 одинаковых вагонах можно перевезти 6 000 тонн угля. В 3 таких вагонах помещается столько угля, сколько в двух большегрузных вагонах. Сколько тонн угля в одном большегрузном вагоне? Задача№2: В магазин привезли хлеб. За день было продано 176 кг хлеба, и после этого в магазине осталось на 145 кг хлеба меньше, чем продали. Сколько килограммов хлеба привезли? Задача№3: Вырази: 1)В миллиметрах: 9 см, 80 см, 2 м 25 см.
2) в минутах: 9 ч, 80 с, 2 ч 25 мин.(плиииииизззз)))))))

Ответы

Автор ответа: katjauser
0
1) 6000/100= 60 т угля помещается в один обычный вагон
60*3=180 т. угля помещается в 3-х обычных вагонах
180/2=90 т угля помещается а одном большегрузном вагоне.

2) 176-145= 31 кг хлеба осталось в магазине
176+31=207 кг. хлеба привезли

3) 1) 1 см=10 мм; 1 м=100см=1000 мм
9 см = 90 мм
80 см=800 мм
2 м 25 см = 2000+250=2250мм

2) 1 ч=60 м; 1м=60 с;
9 ч=540 мин.
80 с=1 мин.20 сек
2ч 25 мин=145 мин.

Похожие вопросы
Предмет: Химия, автор: callme02
Предмет: Английский язык, автор: fakt2377
Прошу! очень нужно успеть в течении 45минут!
1.When we woke up, Mum __________ (already / leave) for work.

has already left
had already leaved
had already left
already had left
2.__________ (you / lock) the door before you left?

You had locked
Have you locked
Had you locked
Had you been locking
3.The team were very disappointed because they __________ (not / win) the game.

hadn't won
didn't won
didn't win
hadn't winned
4. Harry __________ (dig) in the garden the whole afternoon, so he was absolutely dirty.

was digging
had been digging
dug
had dug
5.How long __________ (you / wait) before the train arrived?

you have waited
have you been waiting
have you waited
you have been waiting
6.Mr. Craly left the bank after the cashier __________ (give) out his money.

had given
had been giving
gave
had gave
7.It __________ (rain) for several hours before the ice covered the road.

rained
had been raining
had rained
has been raining
8.Lydia __________ (live) in her uncle's house before she married to Mr. Wickham.

was been living
had been living
was living
lived
9.The dancer came to the scene before the music __________ (begin).

begun
began
had been beginning
had begun
10.Tom was angry because he __________ (miss) the last train home.

had missed
was missing
missed
had been missing
11.High temperature __________ (drop) long before the doctor came.

dropped
had dropped
has dropped
was dropping
12.The boys __________ (play) hockey for half and hour when it got dark.

had played
had been playing
had been played
had playing
13.After her lessons __________ (finish), the girl went to her Granny.

were finishing
had been finishing
had finished
finished
14.Mr. Darcy __________ (decide) to find Lydia and Wickham before he said "Good-bye" to Elizabeth.

decided
had been decided
has decided
had decided