Question

Thực hiện phép tính:

40.(45 - 135) - 40. (45 + 65)

Answer 1

40 . ( 45 - 135 ) - 40 . ( 45 + 65 )

= 40 . 45 - 40 . 135 - 40 . 45 + 40 . 65

= ( 40 . 45 - 40 . 45 ) - ( 40 . 135 + 40 . 65 )

= 0 - 40 . ( 135 + 65 )

= 0 - 40 . 200

= 0 - 8000

= - 8000

Answer 2

\(40.\left(45-135\right)-40.\left(45+65\right)\)

\(=40.\left(45-135-45-65\right)\)

\(=40.\left(45-45-135-65\right)\)

\(=40.\left(-200\right)\)

\(=-8000\)

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Answer 3

\(40\times\left(45-135\right)-40\times\left(45+65\right)\)

\(=40\times\left[\left(45-135\right)-\left(45+65\right)\right]\)

\(=40\times\left(45-135-45-65\right)\)

\(=40\times\left(-135-65\right)\)

\(=40\times\left(-200\right)\)

\(=-8000\)

Answer 4

40 x ( 45 - 135 ) - 40 ( 45 + 65 )

= 40 x 45 - 40 x 135 - 40 x 45 - 40 x 65

= ( 40 x 45 - 40 x 45 ) - ( 40 x 135 + 40 x 65 )

= 0 - 40 x ( 135 + 65 )

= 0 - 40 x 200

= 0 - 8000

= -8000

Answer 5

40 . ( 45 - 135 ) - 40 . ( 45 + 65 )

= 40 . 45 - 40 . 135 - 40 . 45 + 40 . 65

= 40 . ( 45 - 135 - 45 - 65 )

= 40 . (-200)

= -8000

Answer 6

40.(45 - 135) - 40.(45 + 65)

= 40.45 - 40.135 - 40.45 + 40.65

=(40.45 - 4045) - (40.135 + 40.65)

=0 - 40.(135 + 65)

= 0 - 40.200

=0 - 8000

= -8000

Answer 7

=(40.45-40.135)-(40.45+40.65)

=40.45-40.135-40.45-40.65

=(40.45-40.45)-(40.135+40.65)

=-40.(135+65)

=-40.200

=-8000

Answer 8

40 . (45 - 135) - 4 . (45 + 65)

= 40 . 45 - 40 . 135 - 40 . 45 - 40 . 65

= (40 . 45 - 40 . 45) - (40 . 135 + 40 . 65)

= 0 - 40 . (135 + 65)

= 0 - 40 . 200

= 0 - 8000

= -8000