Question

Thực hiện phép tính ( tính nhanh nếu có thể )

54 x ( 46 + 49 ) - 46 x ( 54 - 49 )

 

Answer 1

[54.(46+49)]-[46.(54-49)]

=[54.46+54.49]-[54.46-46.49]

=54.46+54.49-54.46+46.49

=54.46-54.46+54.49+46.49

=54.49+46.49

=49.(54+46)

=49.100

=4900

Chúc bn học tốt

Answer 2

\(54\times\left(46+49\right)-46\times\left(54-49\right)\)

\(=54\times46+54\times49-46\times54+46\times49\)

\(=\left(54\times46-46\times54\right)+49\times\left(54+46\right)\)

\(=49\times100\)

\(=4900\)

Answer 3

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