Question

\(\frac{12,48:0,5x6,25x4x2}{2x3,12x1,25:0,25x10}\)

Tính nhanhn   x là nhân

Answer 1

Khó nhìn quá 

Answer 2

= 3,12x4x2x1,25x5x4x2

 2x3,12x1,25x4x5x2

=4/5

Answer 3

\(=\frac{\frac{312}{25}:\frac{1}{2}\cdot\frac{25}{4}\cdot4\cdot2}{2\cdot\frac{78}{25}\cdot\frac{5}{4}:\frac{1}{4}\cdot10}\)

\(=\frac{\frac{312}{25}\cdot2\cdot25\cdot2}{\frac{156}{25}\cdot\frac{5}{4}\cdot4\cdot10}\)

\(=\frac{\left(\frac{312}{25}\cdot25\right)\cdot2\cdot2}{\left(\frac{156}{25}\cdot10\right)\cdot\frac{5}{4}\cdot4}\)

\(=\frac{312\cdot4}{\frac{312}{5}\cdot5}\)

\(=\frac{312\cdot4}{312}=4\)

Answer 4

=3,12*4*2*1,25*5*4*2

2*3,12*1,25*4*5*2

=4\5