计算下列题目,要求简便

题目

计算下列题目,要求简便
18.3÷4+5.3×2.5+7.13×7.5

答案

原式=18.3×0.25+5.3×2.5+7.13×7.5
=1.83×2.5+5.3×2.5+7.13×7.5
=（1.83+5.3）×2.5+7.13×7.5
=7.13×2.5+7.13×7.5
=7.13×（2.5+7.5）
=7.13×10
=71.3