125 x 28 x 9 x 25
= ( 125 x 28 ) x ( 25 x 9 )
= 3500 x 225
= 787500
Tk nha!!
\(125\cdot28\cdot8\cdot25\)
\(=125\cdot7\cdot4\cdot8\cdot25\)
\(=\left(125\cdot8\right)\cdot\left(4\cdot28\right)\cdot7\)
\(=1000\cdot100\cdot7\)
\(=100000\cdot7\)
\(=700000\)
\(125\times28\times8\times25\)
\(=125\times4\times7\times8\times25\)
\(=\left(125\times8\right)\left(25\times4\right)\times7\)
\(=1000\times100\times7\)
\(=700000\)