Question

14．$\frac{5}{9}$、$\frac{15}{12}$、$\frac{16}{20}$、$\frac{8}{7}$這四個(gè)分?jǐn)?shù)中，真分?jǐn)?shù)有$\frac{5}{9}$、$\frac{16}{20}$，假分?jǐn)?shù)有$\frac{15}{12}$、$\frac{8}{7}$．

Answer 1

分析 分子比分母小的分?jǐn)?shù)叫做真分?jǐn)?shù)，分子大于或者等于分母的分?jǐn)?shù)叫假分?jǐn)?shù)，據(jù)此解答．

解答 解：$\frac{5}{9}$、$\frac{15}{12}$、$\frac{16}{20}$、$\frac{8}{7}$這四個(gè)分?jǐn)?shù)中，真分?jǐn)?shù)有$\frac{5}{9}$、$\frac{16}{20}$，假分?jǐn)?shù)有$\frac{15}{12}$、$\frac{8}{7}$．
故答案為：$\frac{5}{9}$、$\frac{16}{20}$，$\frac{15}{12}$、$\frac{8}{7}$．

點(diǎn)評(píng) 此題考查了真分?jǐn)?shù)、假分?jǐn)?shù)的意義及辨識(shí)．