Question

Tính

13.(-7)

(-8).(-25)

25.(-47).(-4)

8.(125-3000)

512.(2-128)-128.(-512)

Answer 1

13 . ( - 7 ) = - 91

( - 8 ) . ( - 25 ) = 200

25 . ( - 47 ) . ( - 4 ) = ( - 100 ) . ( - 47 ) = 4700

8 . ( 125 - 3000 ) = 8 . 125 - 3000 = 1000 - 3000 = - 2000

512 . ( 2 - 128 ) - 128 . ( - 512 ) = 512 . ( 2 - 128 + 128 ) = 512 . 2 = 1024

Answer 2

13 x (-7) = -91

(-8) x (-25) = 200

25 x (-47) x (-4) = 4700

8 x (125 - 3000) = -23000

512 x (2 - 128) - 128 x (-512) = 1024

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