Question

14．根據(jù)算式補(bǔ)充適當(dāng)?shù)臈l件，連一連．
桃樹(shù)有60棵，梨樹(shù)比桃樹(shù)多$\frac{1}{4}$
梨樹(shù)比桃樹(shù)少$\frac{1}{4}$
桃樹(shù)比梨樹(shù)多$\frac{1}{4}$
桃樹(shù)比梨樹(shù)少$\frac{1}{4}$，梨樹(shù)有多少棵？

Answer 1

分析 （1）桃樹(shù)有60棵，梨樹(shù)比桃樹(shù)多$\frac{1}{4}$，梨樹(shù)有多少棵？把桃樹(shù)的棵數(shù)看作單位“1”，梨樹(shù)的棵數(shù)相當(dāng)于桃樹(shù)棵數(shù)的（1+$\frac{1}{4}$），根據(jù)分?jǐn)?shù)乘法的意義，即可解答．
（2）桃樹(shù)有60棵，梨樹(shù)比桃樹(shù)少$\frac{1}{4}$，梨樹(shù)有多少棵？把桃樹(shù)的棵數(shù)看作單位“1”，梨樹(shù)的棵數(shù)相當(dāng)于桃樹(shù)棵數(shù)的（1+-$\frac{1}{4}$），根據(jù)分?jǐn)?shù)乘法的意義，即可解答．
（3）桃樹(shù)有60棵，桃樹(shù)比梨樹(shù)多$\frac{1}{4}$，梨樹(shù)有多少棵？把梨樹(shù)的棵數(shù)看作單位“1”，桃樹(shù)的棵數(shù)相當(dāng)于梨樹(shù)棵數(shù)的（1+$\frac{1}{4}$），根據(jù)分?jǐn)?shù)除法的意義，即可解答．
（4）桃樹(shù)有60棵，桃樹(shù)比梨樹(shù)少$\frac{1}{4}$，梨樹(shù)有多少棵？把梨樹(shù)的棵數(shù)看作單位“1”，桃樹(shù)的棵數(shù)相當(dāng)于梨樹(shù)棵數(shù)的（1-$\frac{1}{4}$），根據(jù)分?jǐn)?shù)除法的意義，即可解答．

解答 解：根據(jù)算式補(bǔ)充適當(dāng)?shù)臈l件，連一連：
桃樹(shù)有60棵，梨樹(shù)比桃樹(shù)多$\frac{1}{4}$
梨樹(shù)比桃樹(shù)少$\frac{1}{4}$
桃樹(shù)比梨樹(shù)多$\frac{1}{4}$
桃樹(shù)比梨樹(shù)少$\frac{1}{4}$，梨樹(shù)有多少棵？

故答案為：梨樹(shù)比桃樹(shù)多$\frac{1}{4}$
梨樹(shù)比桃樹(shù)少$\frac{1}{4}$
桃樹(shù)比梨樹(shù)多$\frac{1}{4}$
桃樹(shù)比梨樹(shù)少$\frac{1}{4}$

點(diǎn)評(píng) 此題主要是考查分?jǐn)?shù)乘、除法的意義，首先確定單位“1”，再確定比單位“1”多或少幾分之幾，單位“1”已知用乘法，單位“1”不知用除法．