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電子課本網(wǎng) › 第16頁

第16頁

信息發(fā)布者：
?$=2.5×\frac {8}{5}×\frac {1}{4}$?
?$=1$?
?$=25×\frac {1}{5}×\frac {1}{5}×\frac {4}{3}$?
?$=\frac {4}{3}$?
?$=-12×\frac {4}{3}×\frac {1}{5}$?
?$=-\frac {16}{5}$?
?$=\frac {11}{5}×\frac {25}{11}×\frac {2}{5}$?
?$=2$?
?$=\frac {21}{10}×\frac {10}{7}×\frac {10}{7}$?
?$=\frac {30}{7}$?
?$=8×\frac {1}{4}×\frac {4}{15}$?
?$=\frac {8}{15}$?
?$=3×6×\frac {1}{2}×\frac {1}{2}$?
?$=\frac {9}{2}$?
?$=-\frac {4}{7}×\frac {14}{3}×\frac {7}{3}$?
?$=-\frac {56}{9}$?
?$=-3×\frac {4}{7}×\frac {3}{4}×\frac {7}{3}×\frac {1}{9}$?
?$=-\frac {1}{3}$?
?$=-\frac {11}{5}×\frac {1}{6}×\frac {3}{11}×\frac {4}{5}$?
?$=-\frac {2}{25}$?
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