Question

14．$\frac{5}{9}$、$\frac{15}{12}$、$\frac{16}{20}$、$\frac{8}{7}$这四个分数中，真分数有$\frac{5}{9}$、$\frac{16}{20}$，假分数有$\frac{15}{12}$、$\frac{8}{7}$．

Answer 1

分析 分子比分母小的分数叫做真分数，分子大于或者等于分母的分数叫假分数，据此解答．

解答 解：$\frac{5}{9}$、$\frac{15}{12}$、$\frac{16}{20}$、$\frac{8}{7}$这四个分数中，真分数有$\frac{5}{9}$、$\frac{16}{20}$，假分数有$\frac{15}{12}$、$\frac{8}{7}$．
故答案为：$\frac{5}{9}$、$\frac{16}{20}$，$\frac{15}{12}$、$\frac{8}{7}$．

点评 此题考查了真分数、假分数的意义及辨识．