18.76乘以9.9加18.76(简便运算).
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/31 13:41:21
18.76乘以9.9加18.76(简便运算).
18.76*9.9+18.76
=18.76*9.9+18.76*1
=18.76*(9.9+1)
=18.76*10.9
=18.76*(10+0.9)
=18.76*10+18.76*0.9
=187.6+18.76*(1-0.1)
=187.6+(18.76*1-18.76*0.1)
=187.6+18.76-1.876
=204.484
=18.76*9.9+18.76*1
=18.76*(9.9+1)
=18.76*10.9
=18.76*(10+0.9)
=18.76*10+18.76*0.9
=187.6+18.76*(1-0.1)
=187.6+(18.76*1-18.76*0.1)
=187.6+18.76-1.876
=204.484