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第61頁

信息發(fā)布者：
?$\frac {3}{2}$?
3
0.8
?$\frac {3}{28}$?
1
?$\frac {10}{3}$?
0.42
0.027
?$14a$?
2
?$\begin{aligned}解：\frac {1}{10}x&=\frac {1}{2}\\x&=\frac {1}{2}×10\\x&=5\end{aligned}$?
3
20
9
60
六
795000720
七億九千五百萬
零七百二十
79500.072萬
800000000
-80
24
?$80\frac {1}{2}$?
20
?$\begin{aligned}解：\frac {7}{6}x&=42\\x&=42×\frac {6}{7}\\x&=36\end{aligned}$?
?$\begin{aligned}解：0.8x&=8.8\\x&=8.8÷0.8\\x&=11\end{aligned}$?
?$=(9.47－2.47)+0.58$?
?$=7+0.58$?
?$=7.58$?
?$=6－\frac {1}{8}－\frac {7}{8}$?
?$=6－(\frac {1}{8}+\frac {7}{8})$?
?$=6－1$?
?$=5$?
?$=(1－\frac {5}{8})÷\frac {9}{4}$?
?$=\frac {3}{8}×\frac {4}{9}$?
?$=\frac {1}{6}$?
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