Question

2．$\frac{7}{9}$÷$\frac{5}{8}$÷$\frac{7}{6}$=？（　�。�

• A． $\frac{7}{9}$×$\frac{8}{5}$×$\frac{6}{7}$
• B． $\frac{7}{9}$×$\frac{8}{5}$×$\frac{7}{6}$
• C． $\frac{9}{7}$×$\frac{8}{5}$×$\frac{6}{7}$

Answer 1

分析 一個(gè)數(shù)除以分?jǐn)?shù)：一個(gè)數(shù)除以分?jǐn)?shù)，等于這個(gè)數(shù)乘以分?jǐn)?shù)的倒數(shù)；據(jù)此解答．

解答 解：$\frac{7}{9}$÷$\frac{5}{8}$÷$\frac{7}{6}$
=$\frac{7}{9}$×$\frac{8}{5}$×$\frac{6}{7}$
=$\frac{16}{15}$
故選：A．

點(diǎn)評(píng) 此題考查了分?jǐn)?shù)除法法則的運(yùn)用．