1.I spend 30 minutes driving to work everyday
2. It took Railey an hour to choose his new shoes
3.I spent five years studying in this university
4.It took Tom 6 hours to tidy his room
5.It took her 20 minutes to review her lesson before class
6.Jess spends 30 minutes removing her makeup everyday
7.It took me one hour and 40 minutes to watch the ''EXIT'' movie in the cinema
8.It took them half an hour to walk to school
=They spent half an hour walking to school
9. It took Son Naeun 5 days to visit Danang
10. It took her 20 minutes to wash her dog last week

270 : 10,8 = 25

5dm3 = 5000cm3

1/100 m3= 10000cm3

1,324 dm3 = 1324 cm3

12,25 m3 = 12 250 000 cm3

Đổi 0,9m3=900dm3

Bể sẽ đầy sau: 900 : 15 = 60 phút

60 phút = 1 giờ

=> B. 1 giờ

Xin lỗi nếu làm sai ạ! Em mới chỉ học lớp 5 thôi ạ.

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