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第37頁

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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
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