2 x 5² + 3 : 71⁰ - 54 : 3³

75- ( 3 x 5² - 4 x 2³)

A= 12:{390:[ 500-(125+35x7)]}

Tính 1 cách hợp lí:

120+[ 55-(11+3x2)²] + 2³

Tính một cách hợp lí:

17 x 13 + 17 x 72 + 17

Sue is a photographer. Write some questions to ask her.
Hello, Sue . Can I ask you some question about your job? 
Yes, of course
Do you .................. weekends?
Yes, I do. I work every weekend
Do you ................ at.................?
No, I don't have to work at night . I only work in the day
............................... a uniform?
No, I don't .I don't have to wear a uniform
Do ....................... very hard?
Yes , I do . I work every day and some weekends , too. I am always very busy
................................................. with people

Yes ,I do .I work with people all the time
Thank you. I think your job is very interesting

2×19×6+3×37×4+44×22

bài 1 : Tính nhanh

a)2² x 5² x 10² =

b) 60 x 10¹⁰ : 6 x 10