电子课本网 第5页

第5页

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6
​$\frac {5}{8}$​
​$\frac {1}{8}$​
​$\frac {3}{7}$​
​$\frac {2}{3}$​
​$ \frac {16}{9}$​
42
​$\frac {5}{12}$​
7.5
60
5.2
4150
18.84
28.26
37.68
94.2
56.52
6
54
9
27
36
3
​$=\frac {1}{8}×(\frac {18}{11}+\frac {4}{11})$​
​$=\frac {1}{8}×2$​
​$=\frac {1}{4}$​
​$=\frac {13}{14}-\frac {4}{5}+\frac {1}{14}$​
​$=(\frac {13}{14}+\frac {1}{14})-\frac {4}{5}$​
​$=1-\frac {4}{5}$​
​$=\frac {1}{5}$​
​$=9-\frac {5}{7}-\frac {2}{7}$​
​$=9-(\frac {5}{7}+\frac {2}{7})$​
​$=9-1$​
​$=8$​
​$=\frac {5}{14}×\frac {1}{3}×\frac {9}{10}$​
​$=\frac {3}{28}$​
​$=(\frac {7}{9}+\frac {2}{3})×36$​
​$=28+24$​
​$=52$​
​$=\frac {3}{4}×(\frac {4}{15}×5)$​
​$=\frac {3}{4}×\frac {4}{3}$​
​$=1$​