Ghi đề dấu nhân rõ ràng ra nha

\(\dfrac{12,48:0,5\times6,25\times4\times2}{2\times3,12\times1,25:0,25\times10}\\ =\dfrac{12,48\times2\times6,25\times4\times2}{2\times3,12\times1,25\times4\times10}\\ =\dfrac{12,48}{3,12}\times\dfrac{2}{2}\times\dfrac{2}{10}\times\dfrac{6,25}{1,25}\times\dfrac{4}{4}\\ =4\times1\times\dfrac{1}{5}\times5\times1=4\)

Xem lại đề bài, sao trong phép tính có dấu phẩy hả bạn?

Đề bị sai rồi

Bạn xem có ghi nhầm không

12.48:0.5x1.25x5x2x2x2phan 2x3x6x2x1.2:0.5x0.5x5x2

trentu so gach 0.5  ;3 so 2 o cuoi  ;5 va 1.25

duoi mau so gach 2 so 2 o cho dau va cho 6x2; 1.25 1 so 0.5 va gach ca 5x2 o cho cuoi

bang 12.48phan 18 

Khó nhìn quá 

= 3,12x4x2x1,25x5x4x2

 2x3,12x1,25x4x5x2

=4/5

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

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

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

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

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

\(\frac{12,48:0,5x6,25x4x2}{2x3,12x1,25:0,25x10}=\frac{3,12x4x2x1,25x5x4x2}{2x3,12x1,25x4x2x5}=4\)

0,004 bn nhé

\(\frac{\text{12,48:0,5x6,25x4x2}}{2x3,12x1,25x0,25x10}\) = \(\frac{1248}{312}\)=4

\(=\frac{12,48x2x6,25x4x2}{2x3,12x1,25x4x10}\)

\(=\frac{3,12x4x2x1,25x5x4x2}{2x3,12x1,25x4x10}\)

\(=4\)