0.45*72+45*0.18+4.5简便方法的答案
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:2024/06/24 07:55:21
0.45*72+45*0.18+4.5简便方法的答案
![0.45*72+45*0.18+4.5简便方法的答案](/uploads/image/z/869447-47-7.jpg?t=0.45%2A72%2B45%2A0.18%2B4.5%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E7%9A%84%E7%AD%94%E6%A1%88)
0.45*72+45*0.18+4.5
=0.45*72+0.45*0.18*100+0.45*10
=0.45*72+0.45*18+0.45*10
=0.45*(72+18+10)
=0.45*100
=45
=0.45*72+0.45*0.18*100+0.45*10
=0.45*72+0.45*18+0.45*10
=0.45*(72+18+10)
=0.45*100
=45