Question

6．計(jì)算，寫出計(jì)算過(guò)程：
$\frac{15}{16}$×$\frac{20}{21}$×$\frac{1}{5}$
$\frac{9}{10}$×$\frac{2}{3}$×$\frac{5}{6}$
$\frac{5}{33}$×44×$\frac{1}{2}$．

Answer 1

分析 根據(jù)分?jǐn)?shù)四則混合運(yùn)算的運(yùn)算順序，從左向右依次計(jì)算，求出每個(gè)算式的值各是多少即可．

解答 解：（1）$\frac{15}{16}$×$\frac{20}{21}$×$\frac{1}{5}$
=$\frac{25}{28}$×$\frac{1}{5}$
=$\frac{5}{28}$

（2）$\frac{9}{10}$×$\frac{2}{3}$×$\frac{5}{6}$
=$\frac{3}{5}$×$\frac{5}{6}$
=$\frac{1}{2}$

（3）$\frac{5}{33}$×44×$\frac{1}{2}$
=$\frac{20}{3}$×$\frac{1}{2}$
=3$\frac{1}{3}$

點(diǎn)評(píng) 此題主要考查了分?jǐn)?shù)四則混合運(yùn)算，要熟練掌握，注意運(yùn)算順序．