Question

18．男工人數(shù)占工人總數(shù)的$\frac{6}{11}$，男工人數(shù)比女工人數(shù)多$\frac{（）}{（）}$，女工人數(shù)比男工人數(shù)少$\frac{（）}{（）}$．

Answer 1

分析 男工人數(shù)占工人總數(shù)的$\frac{6}{11}$，把男工人數(shù)看作6份，總?cè)藬?shù)看作11份，則女工人數(shù)是11-6=5份；用男工份數(shù)減去女工份數(shù)再除以女工份數(shù)，即為男工人數(shù)比女工人數(shù)多幾分之幾；用男工份數(shù)減去女工份數(shù)再除以男工份數(shù)，即為女工人數(shù)比男工人數(shù)少幾分之幾．

解答 解：把男工人數(shù)看作6份，總?cè)藬?shù)看作11份，則女工人數(shù)是11-6=5份；
男工人數(shù)比女工人數(shù)多：
（6-5）÷5
=1÷5
=$\frac{1}{5}$
女工人數(shù)比男工人數(shù)少：
（6-5）÷6
=1÷6
=$\frac{1}{6}$
答：男工人數(shù)比女工人數(shù)多$\frac{1}{5}$，女工人數(shù)比男工人數(shù)少$\frac{1}{6}$．
故答案為：$\frac{1}{5}$；$\frac{1}{6}$．

點評 此題考查求一個數(shù)是另一個數(shù)的百分之幾（或幾分之幾），把另一個數(shù)看作單位“1”，用一個數(shù)除以另一個數(shù)．