Question

Tính bằng cách thuận tiện:

(6 - 4\(\dfrac{1}{2}\)) : 0,03 x 40%

Answer 1

(6 - 4\(\dfrac{1}{2}\) ) : 0,03 x 40%

= (6 - \(\dfrac{9}{2}\)) : \(\dfrac{3}{100}\) x \(\dfrac{40}{100}\)

= \(\dfrac{3}{2}\) x\(\dfrac{100}{3}\) x \(\dfrac{40}{100}\)

= 20

Answer 2

Bài khó vậy 

Answer 3

=(600%-9/2):3%x40%

=(600%-450%):3%x40%

=150%:3%x40%

=50%x40%

=2000%