题目内容
【题目】脱式计算
①7.2×0.8+1.04
②6.83×7.5+6.83×2.5
③1.08×0.88÷0.27
④2.05÷0.82+33.6.
【答案】7.8;68.3;3.52;36.1
【解析】
试题分析:①首先计算乘法,然后计算加法;
②根据乘法分配律,计算即可;
③首先计算乘法,然后计算除法;
④首先计算除法,然后计算加法.
解:①7.2×0.8+1.04
=5.76+1.04
=7.8
②6.83×7.5+6.83×2.5
=6.83×(7.5+2.5)
=6.83×10
=68.3
③1.08×0.88÷0.27
=0.9504÷0.27
=3.52
④2.05÷0.82+33.6
=2.5+33.6
=36.1
练习册系列答案
相关题目