Question

tính nhanh

Answer 1

`125xx4xx20xx50xx25xx8`

`= (125xx8)(25xx4)(50xx20)`

`= 1000xx100xx1000`

`= 100000000`

 

Answer 2

\(=\left(25.4\right).\left(125.8\right).\left(20.50\right)\\ =100.1000.1000\\ =100,000,000\)

Answer 3

100000000

Answer 4

\(125\times4\times20\times50\times25\times8\)

\(=\left(125\times8\right)\times\left(25\times4\right)\times\left(50\times20\right)\)

\(=1000\times100\times1000\)

\(=100000000\)

Answer 5

125×4×20×50×25×8

= (125×8) × (4×25) × (20×50)

=    1000 +×  100  × 1000

=  100 000 000

Answer 6

\(125.4.20.50.25.8\)

\(=\left(25.4\right).\left(20.50\right).\left(125.8\right)\)

\(=100.1000.1000\)

\(=100000000\)