1,08 : 3
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PT
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23 tháng 11 2022
\(M=\left(-\dfrac{6}{5}:\left(\dfrac{8}{5}\cdot\dfrac{5}{4}\right):\dfrac{16}{25}-\dfrac{1}{25}\right)+\left[\left(1.08-0.08\right)\cdot\dfrac{7}{4}:\left(5+\dfrac{5}{9}-\dfrac{9}{4}\right)\cdot\dfrac{36}{17}\right]+0.3\cdot\dfrac{5}{2}\)
\(=\left(-\dfrac{6}{5}\cdot\dfrac{1}{2}\cdot\dfrac{16}{25}-\dfrac{1}{25}\right)+\left[\dfrac{7}{4}:\cdot\dfrac{36}{119}\cdot\dfrac{36}{17}\right]+0.75\)
\(=-\dfrac{53}{125}+\dfrac{324}{289}+0.75\simeq1,45\)
CM
15 tháng 5 2017
a) 1,08 : 6 = 1,8  |
96,25 : 7 = 1,375  |
5,296 : 4 = 1,324  |
17,265 : 3 = 5,756  |
b)
1,08 : 6 = 0,18
96,25 : 7 = 13,75
17,265 : 3 = 5,755
2 tháng 9 2017
Phan Hoàng Mai
Tính :
\(\left(-0,5-\frac{3}{5}\right):\left(-\frac{22}{25}\right)+\left(\frac{2}{25}-1,08\right).\frac{3}{8}-72:12^2\)
\(=\left(-\frac{5}{10}-\frac{3}{5}\right):\frac{-22}{25}+\left(\frac{2}{25}-\frac{108}{100}\right).\frac{3}{8}-72:144\)
\(=\left(-\frac{5}{10}-\frac{6}{10}\right).\frac{-25}{22}+\left(\frac{8}{100}-\frac{108}{100}\right).\frac{3}{8}-\frac{1}{2}\)
\(=\frac{-11}{10}.\frac{-25}{22}+\left(-1\right).\frac{3}{8}-\frac{1}{2}\)
\(=\frac{\left(-11\right).\left(-25\right)}{10.22}+\frac{-3}{8}-\frac{1}{2}\)
\(=\frac{5}{4}+\frac{-3}{8}-\frac{1}{2}\)
\(=\frac{10}{8}+\frac{-3}{8}-\frac{4}{8}\)
\(=\frac{3}{8}\)
Chúc bạn học tốt!!!
2 tháng 9 2017
\(\left(-0,5-\frac{3}{5}\right):\left(-\frac{22}{25}\right)+\left(\frac{2}{25}-1,08\right)\cdot\frac{3}{8}-72:12^2\)
=\(\left(-\frac{1}{2}-\frac{3}{5}\right):\left(-\frac{22}{25}\right)+\left(\frac{2}{25}-\frac{27}{25}\right)\cdot\frac{3}{8}-\frac{72}{144}\)
=\(\left(-\frac{11}{10}.\left(-\frac{25}{22}\right)\right)-1\cdot\frac{3}{8}-\frac{1}{2}\)
= \(\frac{5}{4}-\frac{3}{8}-\frac{1}{2}\)
= \(\frac{10}{8}-\frac{3}{8}-\frac{4}{8}=\frac{3}{8}\)
PT
1
2 tháng 9 2017
\(\left(-0,5-\dfrac{3}{5}\right):\left(\dfrac{-22}{25}\right)+\left(\dfrac{2}{25}-1,08\right).\dfrac{3}{8}-72:12^2\)
\(=\left(\dfrac{-1}{2}-\dfrac{3}{5}\right):\left(\dfrac{-22}{25}\right)+\left(\dfrac{2}{25}-\dfrac{27}{25}\right).\dfrac{3}{8}-\dfrac{72}{144}\)
\(=\left[\dfrac{-11}{10}.\dfrac{-25}{22}\right]-1.\dfrac{3}{8}-\dfrac{1}{2}\)
\(=\dfrac{5}{4}-\dfrac{3}{8}-\dfrac{1}{2}\)
\(=\dfrac{10}{8}-\dfrac{3}{8}-\dfrac{4}{8}\)
\(=\dfrac{3}{8}\)
=0,36
=0.36