Question

tính bằng cách thuân tiện

d, 25 x 32 x 125 x 15

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Answer 1

\(25\times32\times125\times15\\=(25\times4)\times(8\times125)\times15\\=100\times1000\times15\\=100000\times15\\=1500000\)

Answer 2

25 x 32 x 125 x 15 

=(125 x 32 ) x (25 x 15 )

= 4000 x 375

=1 500 000

Answer 3

\(25\times32\times125\times15\)

\(=25\times4\times8\times125\times15\)

\(=\left(25\times4\right)\times\left(8\times125\right)\times15\)

\(=100\times1000\times15\)

\(=\left(1000\times15\right)\times100\)

\(=15000\times100=1500000\)