Question

 

Tính

a.3/7x5/4-1/4  b.11/10-2/5:2/3

Answer 1

8507cm2

32m^2 217dm^2=320217

3/5 giờ 12 phút = 48 phút

\(\dfrac{3}{7}.\left(\dfrac{5-1}{4}\right)=\dfrac{3}{7}.1=\dfrac{3}{7}\)

\(\dfrac{11}{10}-\dfrac{6}{10}=\dfrac{5}{10}=\dfrac{1}{2}\)

Answer 2

a)

= 15/28 - 1/4

= 2/7

b)

= 7/10 : 2/3

= 21/20

Answer 3

85m2 7cm2= 850007    cm2

32m217dm2=  3217  dm2

3/5 giờ 12=  48 phút

Tính

a.3/7x5/4-1/4

= 15/28 - 1/4

- 2/7 

b.11/10-2/5:2/3

= 11/10 - 3/5

= 1/2