电子课本网 第48页

第48页

信息发布者:
$\frac {2}{7}$
$\frac {7}{9}$
$\frac {2}{9}$
14000
1:10
1:9
45
​$ =\frac {2}{3}×\frac {15}{14}×\frac {1}{25}$​
​$ =\frac {5}{7}×\frac {1}{25}$​
​$ =\frac {1}{35}$​
​$ =\frac {5}{8}×\frac {6}{5}×\frac {4}{9}$​
​$ =\frac {3}{4}×\frac {4}{9}$​
​$ =\frac {1}{3}$​
$=\frac {5}{3}×\frac {9}{5}$
$=3$
$=5:12$
$=\frac {5}{12}$
​$ =24:120$​
​$ =1$​:​$5$​
​$ =\frac {1}{5}$​
​$ =8$​:​$15$​
​$ =\frac {8}{15}$​
​$ =25$​:​$3$​
​$ =\frac {25}{3}$​
​$ 90÷\frac {1}{3}=270($​页​$)$​
​$ 270×\frac {1}{5}+1=55($​页​$)$​
答:小明接下来应该从第​$55$​页看起。
​$ 120×\frac {5}{8}÷\frac {5}{6}=90$​
答:这道算式的正确得数是​$90。$​