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Ghi đề dấu nhân rõ ràng ra nha
\(\dfrac{12,48:0,5\times6,25\times4\times2}{2\times3,12\times1,25:0,25\times10}\\ =\dfrac{12,48\times2\times6,25\times4\times2}{2\times3,12\times1,25\times4\times10}\\ =\dfrac{12,48}{3,12}\times\dfrac{2}{2}\times\dfrac{2}{10}\times\dfrac{6,25}{1,25}\times\dfrac{4}{4}\\ =4\times1\times\dfrac{1}{5}\times5\times1=4\)
![](https://rs.olm.vn/images/avt/0.png?1311)
12,48 : 0,5 * 6,25 * 4 * 2 = 12,48 * 2 * 6,25 * 4 * 2
= 12,48 * 2 * ( 6,25 * 4 ) * 2
= 12,48 * 2 * 25 * 2
= 12,48 * 25 * ( 2 * 2 )
= 12,48 * 25 * 4
= 12,48 * ( 25 * 4)
= 12,48 * 100
= 1248
2 * 3,12 * 1,25 : 0,25 * 10 = 2 * 3,12 * 1,25 * 4 * 10
= 3,12 * 1,25 * ( 4 * 2 ) * 10
= 3,12 * 1,25 * 8 * 10
= 3,12 * ( 1,25 * 8 ) * 10
= 3,12 * 10 * 10
= 3,12 * ( 10 * 10 )
= 3,12 * 100
= 312
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\frac{12,48:0,5x6,25x4x2}{2x3,12x1,25:0,25x10}=\frac{3,12x4x2x1,25x5x4x2}{2x3,12x1,25x4x2x5}=4\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(=\frac{12,48x2x6,25x4x2}{2x3,12x1,25x4x10}\)
\(=\frac{3,12x4x2x1,25x5x4x2}{2x3,12x1,25x4x10}\)
\(=4\)
![](https://rs.olm.vn/images/avt/0.png?1311)
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
![](https://rs.olm.vn/images/avt/0.png?1311)
12,48 : 0,5 * 6,25 * 4 * 2 = 12,48 * 2 * 6,25 * 4 * 2
= 12,48 * 2 * ( 6,25 * 4 ) * 2
= 12,48 * 2 * 25 * 2
= 12,48 * 25 * ( 2 * 2 )
= 12,48 * 25 * 4
= 12,48 * ( 25 * 4)
= 12,48 * 100
= 1248
2 * 3,12 * 1,25 : 0,25 * 10 = 2 * 3,12 * 1,25 * 4 * 10
= 3,12 * 1,25 * ( 4 * 2 ) * 10
= 3,12 * 1,25 * 8 * 10
= 3,12 * ( 1,25 * 8 ) * 10
= 3,12 * 10 * 10
= 3,12 * ( 10 * 10 )
= 3,12 * 100
= 312
64896
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