18.7+18.7100 5.20.8+4.20.8 43.299+43.2 脱式计算

分类: 作业答案 • 2022-02-07 15:49:04

问题描述：

18.7+18.7*100 5.2*0.8+4.2*0.8 43.2*99+43.2 脱式计算

答

18.7+18.7*100
=18.7+1870
=1888.7
5.2*0.8+4.2*0.8
=(5.2+4.2)*0.8
=9.4*0.8
=7.52
43.2*99+43.2
=43.2*(99+1)
=43.2*100
=4320

18.7+18.7*100 5.2*0.8+4.2*0.8 43.2*99+43.2 脱式计算