电子课本网 第37页

第37页

信息发布者:
1.02
176
2
80
8
5
​​$4\frac 1{16}$​​
​$\frac{9}{16}$​
6.4
0.7
​​$\frac {1}{2}$​​
​​$\frac {2}{13}$​​
​$\begin{aligned}解:\frac {1}{4}x&=0.36×0.75\\\frac {1}{4}x&=0.27\\x&=0.27÷0.25\\x&=1.08\end{aligned}$​
​$\begin{aligned}解:\frac {1}{6}x&=\frac {4}{9}×15\\\frac {1}{6}x&=\frac {20}{3}\\x&=40\end{aligned}$​
​$\begin{aligned}解:5x&=180-3×45\\5x&=180-135\\5x&=45\\x&=9\end{aligned}$​
​$\begin{aligned}解:\frac {1}{4}x&=\frac {2}{3}-\frac {5}{9}\\\frac {1}{4}x&=\frac {1}{9}\\x&=\frac {4}{9}\end{aligned}$​
​$\begin{aligned}解:2x-2&=18×7\\2x-2&=126\\2x&=128\\x&=64\end{aligned}$​
​$\begin{aligned}解:0.65x&=0.52\\x&=0.8\end{aligned}$​
​​$=(21.7+7.3)-(\frac {3}{7}+\frac {11}{7})$​​
​​$=29-2$​​
​​$=27$​​
=3×(150-102)
=3×48
=144
​​$=\frac {5}{4}×(\frac {15}{17}-\frac {7}{17})$​​
​​$=\frac {5}{4}×\frac {8}{17}$​​
​​$=\frac {10}{17}$​​
​​$=\frac {7}{12}÷(\frac {1}{2}×14)$​​
​​$=\frac {7}{12}÷7$​​
​​$=\frac {1}{12}$​​
​​$=4+\frac {26}{37}+\frac {11}{37}$​​
​​$=4+1$​​
​​$=5$​​
=0.25×0.8×8×1.25
=0.2×10
=2