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電子課本網(wǎng) 第10頁

第10頁

信息發(fā)布者:
B
A
B
D
?$\frac {9}{7}$?
?$\frac {2}{5}$?
?$\frac {1}{5}$?
12
?$\frac {5}{3}$?
?$\frac {3}{20}$?
?$5\frac {5}{7}$?
?$\frac {5}{4}$?
?$=\frac {5}{24}×\frac {21}{15}$?
?$=\frac {7}{24}$?
?$=12×\frac {1}{2}$?
?$=6$?
=3×8
=24
=3×7
=21
?$=\frac {3}{7}×\frac {14}{3}$?
?$=2$?
?$=\frac {10}{3}×\frac {1}{6}$?
?$=\frac {5}{9}$?
?$\frac {1}{12}×6×\frac {2}{3}=\frac {1}{3}$?
?$1÷ (\frac {8}{9}×\frac {3}{4})=\frac {3}{2}$?