Question

5．在$\frac{11}{9}$、$\frac{7}{2}$、$\frac{2}{3}$、$\frac{3}{4}$、$\frac{9}{9}$、$\frac{6}{9}$這些分?jǐn)?shù)中，真分?jǐn)?shù)有$\frac{2}{3}$，$\frac{3}{4}$，$\frac{6}{9}$，假分?jǐn)?shù)有$\frac{11}{9}$，$\frac{7}{2}$，$\frac{9}{9}$，最簡(jiǎn)分?jǐn)?shù)有$\frac{7}{2}$，$\frac{2}{3}$，$\frac{3}{4}$．

Answer 1

分析 根據(jù)真分?jǐn)?shù)：分子小于分母的分?jǐn)?shù)；假分?jǐn)?shù)：分子大于或等于分母的分?jǐn)?shù)；最簡(jiǎn)分?jǐn)?shù)：是指分子和分母互質(zhì)的分?jǐn)?shù)，又稱既約分?jǐn)?shù)．

解答 解：在$\frac{11}{9}$、$\frac{7}{2}$、$\frac{2}{3}$、$\frac{3}{4}$、$\frac{9}{9}$、$\frac{6}{9}$這些分?jǐn)?shù)中，真分?jǐn)?shù)有$\frac{2}{3}$，$\frac{3}{4}$，$\frac{6}{9}$，假分?jǐn)?shù)有$\frac{11}{9}$，$\frac{7}{2}$，$\frac{9}{9}$，
最簡(jiǎn)分?jǐn)?shù)有$\frac{7}{2}$，$\frac{2}{3}$，$\frac{3}{4}$．
故答案為：$\frac{2}{3}$，$\frac{3}{4}$，$\frac{6}{9}$，$\frac{11}{9}$，$\frac{7}{2}$，$\frac{9}{9}$，$\frac{7}{2}$，$\frac{2}{3}$，$\frac{3}{4}$．

點(diǎn)評(píng) 考查了分?jǐn)?shù)的分類，本題的關(guān)鍵是掌握真分?jǐn)?shù)，假分?jǐn)?shù)，最簡(jiǎn)分?jǐn)?shù)的定義，是基礎(chǔ)題型．