第94页

信息发布者:
$8$
$300$
$28$
$40$
$\frac{32}{39}$
$\frac{20}{3}$
​$=\frac {7}{15}×\frac {5}{14}×12$​
​$=\frac {1}{6}×12$​
​$=2$​
​$=\frac {5}{12}×\frac {24}{25}×\frac {15}{16}$​
​$=\frac {2}{5}×\frac {15}{16}$​
​$=\frac {3}{8}$​
​$=\frac {4}{9}×(\frac {3}{5}×\frac {5}{8})$​
​$=\frac {4}{9}×\frac {3}{8}$​
​$=\frac {1}{6}$​
​$\frac 16×\frac 16×6=\frac 16($​平方分米​$)$​
答:至少需要彩纸​$ \frac 16$​平方分米。
​$\frac {1}{6}×\frac {1}{6}×\frac {1}{6} = \frac {1}{216}($​立方分米​$)$​
答:这个礼盒的体积是​$\frac {1}{216}$​立方分米。
​$ \frac {7}{15}×5×\frac {4}{21} = \frac {4}{9}($​公顷​$)$​
答:​$5$​台这样的拖拉机​$\frac {4}{21}$​小时耕地​$\frac {4}{9}$​公顷。
​$ \frac {4}{5}×\frac {3}{5}×\frac {3}{10}= \frac {18}{125}($​立方米​$)$​
答:油箱里有油​$\frac {18}{125}$​立方米。