Question

3．分母是8的所有最簡(jiǎn)真分?jǐn)?shù)有$\frac{1}{8}$、$\frac{3}{8}$、$\frac{5}{8}$、$\frac{7}{8}$．

Answer 1

分析 真分?jǐn)?shù)是指分子比分母小的分?jǐn)?shù)，最簡(jiǎn)分?jǐn)?shù)是分子和分母為互質(zhì)數(shù)的分?jǐn)?shù)，據(jù)此解答．

解答 解：分母是8的所有最簡(jiǎn)真分?jǐn)?shù)有 $\frac{1}{8}$、$\frac{3}{8}$、$\frac{5}{8}$、$\frac{7}{8}$．
故答案為：$\frac{1}{8}$，$\frac{3}{8}$，$\frac{5}{8}$，$\frac{7}{8}$．

點(diǎn)評(píng) 本題主要考查了學(xué)生對(duì)真分?jǐn)?shù)和最簡(jiǎn)分?jǐn)?shù)意義的掌握．