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電子課本網(wǎng) › 第103頁

第103頁

信息發(fā)布者：
1219
0.65
0.8
250
?$5 \frac {2} {3}$?
?$\frac {1}{64}$?
1
30
?$\frac {1}{5}$?
0.2
=368÷[1÷0.01]
=368÷100
=3.68
?$ =(\frac {7}{4}+\frac {1}{4})×\frac {5}{8}$?
?$=2×\frac {5}{8}$?
?$=\frac {5}{4}$?
?$ =5+(\frac {16}{27}+\frac {11}{27})$?
?$=5+1$?
?$=6$?
=(772+128)-(317+283)
=900-600
=300
$\begin {aligned}解： \frac {2}{3}x&=21×\frac {2}{9}\\\frac {2}{3}x&=\frac {14}{3}\\x &=7\end {aligned}$
$\begin {aligned}解： 0.74x&=33.3\\x &=45\end {aligned}$
$\begin {aligned}解： \frac {1}{5}x&=10\\x &=50\end {aligned}$
$\begin {aligned}解： \frac {3}{5}x&=\frac {8}{25}×\frac {3}{4}\\\frac {3}{5}x&=\frac {6}{25}\\x &=\frac {2}{5}\end {aligned}$
20099000
八
千萬
2010萬
?$\frac {9}{4}$?
?$\frac {1}{4}$?
16
5
10
100
12
8
1：3=5：15
7.2
2.4
7
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