第96页

信息发布者：
$\frac{7}{5}$
$\frac{13}{8}$
$\frac{1}{4}$
$\frac{4}{3}$
$\frac{1}{8}$
$\frac{5}{2}$
1
0
$\frac{1}{2}$
$\frac{5}{6}$
$\frac{13}{5}$
$2\frac{3}{5}$
×
√
√
​$=\frac {8}{9}×(\frac {3}{7}×\frac {7}{24})$​
​$=\frac {8}{9}×\frac {1}{8}$​
​$=\frac {1}{9}$​
​$=\frac {4}{5}×(\frac {7}{16}×\frac {20}{21})$​
​$=\frac {4}{5}×\frac {5}{12}$​
​$=\frac {1}{3}$​
​$=\frac {25}{42}×\frac {4}{5}$​
​$=\frac {10}{21}$​
​$ \frac {2}{25}×\frac {5}{16}=\frac {1}{40}($​吨​$)$​
答：第二次用去​$\frac {1}{40}$​吨。
​$ \frac {1}{4}×\frac {1}{10}=\frac {1}{40}$​
答：积是​$\frac {1}{40}。$​
$\frac{8}{5}$
$\frac{1}{a}$
2
$\frac{2}{3}$
$\frac{4}{7}$
＜1
＞1
=1
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