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第103页

信息发布者：

1219

0.65

0.8

250

$5 \frac {2} {3}$

$\frac {1}{64}$

$\frac {1}{5}$

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

千万

2010万

$\frac {9}{4}$

$\frac {1}{4}$

100

1：3=5：15

7.2

2.4