999.90.28+0.666680 简便计算

分类: 作业答案 • 2022-02-04 17:39:57

问题描述：

999.9*0.28+0.6666*80 简便计算

答

=333.3*3*0.28+333.3*0.002*80
=333.3*0.84+333.3*0.16
=333.3*(0.84+0.16)
=333.3*2
=333.3

999.9*0.28+0.6666*80 简便计算