题目内容
【题目】递等式计算,能简便的就简便计算.
①1.75÷0.25×4
②0.75×6.4﹣0.75×4.4
③72÷0.4÷2.5
④4.68÷(6.5﹣5.2)
【答案】①28;②1.5;③72;④3.6.
【解析】
①1.75÷0.25×4
=7×4
=28;
②0.75×6.4﹣0.75×4.4
=0.75×(6.4﹣4.4)
=0.75×2
=1.5;
③72÷0.4÷2.5
=72÷(0.4×2.5)
=72÷1
=72;
④4.68÷(6.5﹣5.2)
=4.68÷1.3
=3.6.
练习册系列答案
相关题目