Question

A, 3km 75m =...m 1/4 m2 =...dm2 3 giờ 15 phút =....phút B,26320 : 35 C, Tính bằng cách thuận tiện: 9/15 x 5/12 + 9/15 x 7/12

Answer 1

a: 3km75m=3,075m

\(\dfrac{1}{4}m^2=25dm^2\)

3h15'=195p

b: 26320:35=752

c: =3/5(5/12+7/12)

=3/5

Answer 2

a, \(3km75m=3075m\)

\(\dfrac{1}{4}m^2=25\text{d}m^2\)

`3` giờ `15` phút = `195` phút

 

b,

 

`->26320 : 35=752.`

 

c, \(\dfrac{9}{15}\times\dfrac{5}{12}+\dfrac{9}{15}\times\dfrac{7}{12}=\dfrac{9}{15}\times\left(\dfrac{5}{12}+\dfrac{7}{12}\right)=\dfrac{9}{15}\times1=\dfrac{9}{15}\)

`@mt`