7.9890.1+79.80.94+3.99怎样简便计算

分类: 作业答案 • 2021-12-28 10:49:21

问题描述：

7.98*90.1+79.8*0.94+3.99怎样简便计算

答

7.98*90.1+79.8*0.94+3.99
=7.98*90.1+7.98*9.4+7.98*0.5
=7.98*(90.1+9.4+0.5)
=7.98*100
=798

7.98*90.1+79.8*0.94+3.99怎样简便计算