Question

Tính bằng cách thuận tiện nhất:
        8/15 x 25/32 - 8/15 x 10/32

Answer 1

1/4

Answer 2

\(=\dfrac{8}{15}\left(\dfrac{25}{32}-\dfrac{10}{32}\right)=\dfrac{8}{15}\cdot\dfrac{15}{32}=\dfrac{1}{4}\)

Answer 3

( 25/32 - 10/32) x 8/15

 = 15/32 x 8/15

= 1/4

Answer 4

\(=\dfrac{8}{15}\times\left(\dfrac{25}{32}-\dfrac{10}{32}\right)=\dfrac{8}{15}\times\dfrac{15}{32}=\dfrac{1}{4}\)

Answer 5

\(\dfrac{1}{4}\)

Answer 6

1/4

Answer 7

= 8/15 x ( 25/32 - 10/32 )

= 8/15 x 15/32

= 1/4

Answer 8

=8/15 x ( 25/32-10/32 )

=8/15 x 15/32

=1/4

Answer 9

\(=\dfrac{8}{15}\times\left(\dfrac{25}{32}-\dfrac{10}{32}\right)=\dfrac{8}{15}\times\dfrac{15}{32}=\dfrac{8}{32}=\dfrac{1}{4}\)

Answer 10

= 8/15 x (25/32 - 10/32)

= 8/15 x 15/32

= 1/4

Answer 11

Ôi may quá!Đáp án mình sai nhưng kịp rút gọn thành đáp án đúng =))

 

Answer 12

=8/15x(25/32 - 10/32)=8/15 x 15/32=1/4

Answer 13

\(\dfrac{8}{15}\times\dfrac{25}{32}-\dfrac{8}{15}\times\dfrac{10}{32}\)

\(=\dfrac{8}{15}\times\left(\dfrac{25}{32}-\dfrac{10}{32}\right)\)

\(=\dfrac{8}{15}\times\dfrac{15}{32}=\dfrac{1}{4}\)

Answer 14

\(\dfrac{8}{15}\times\dfrac{25}{32}-\dfrac{8}{15}\times\dfrac{10}{32}=\dfrac{8}{15}\times\left(\dfrac{25}{32}-\dfrac{10}{32}\right)=\dfrac{8}{15}\times\left(\dfrac{25-10}{32}\right)=\dfrac{8}{15}\times\dfrac{15}{32}=\dfrac{8\times15}{15\times32}=\dfrac{120}{480}=\dfrac{1}{4}\)

Answer 15

   \(\dfrac{8}{15}\)x\(\dfrac{25}{32}\)-\(\dfrac{8}{15}\)x\(\dfrac{10}{32}\)
= \(\dfrac{8}{15}\)x(\(\dfrac{25}{32}-\dfrac{10}{32}\))
= \(\dfrac{8}{15}\)x\(\dfrac{15}{32}\)
= \(\dfrac{1}{4}\)

Answer 16

` 8/15 . 25/32 - 8/15 . 10/32 = 8/15 ( 25/32 - 10/32 ) = 8/15 . 15/32=1/4 `