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電子課本網(wǎng) 第18頁(yè)

第18頁(yè)

信息發(fā)布者:
D
B
C
?$\frac {2}{21}$?
?$\frac {15}{8}$?
?$\frac {5}{6}$?
?$\frac {3}{2}$?
?$\frac {7}{12}$?
?$\frac {6}{25}$?
0
?$\frac {1}{21}$?
?$=\frac {9}{10}×\frac {8}{3}×5$?
?$=12$?
?$=\frac {3}{5}×\frac {1}{4}×12$?
?$=\frac {9}{5}$?
?$=\frac {3}{4}×\frac {3}{4}$?
?$=\frac {9}{16}$?
?$=\frac {1}{4}×\frac {2}{3}×\frac {18}{7}$?
?$=\frac {3}{7}$?
?$=\frac {11}{12}×\frac {19}{46}×\frac {23}{22}$?
?$=\frac {19}{48}$?
?$=\frac {1}{3}×\frac {16}{5}×\frac {7}{12}$?
?$=\frac {28}{45}$?
?$=16:9$?
?$=\frac {16}{9}$?
?$=3:5$?
?$=\frac {3}{5}$?
?$=5:8$?
?$=\frac {5}{8}$?
解:?$x=\frac {14}{15}÷\frac {2}{3}$?
?        $x=\frac {7}{5}$?
解:  0.25x=2
                 x=8
解:?$ 2x=\frac {2}{5}$?
?          $ x=\frac {1}{5}$?