2.9*0.45+0.29*4.2+0.029*13怎样用简便方法
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解决时间 2021-11-09 01:09
- 提问者网友:niaiwoma
- 2021-11-08 17:01
2.9*0.45+0.29*4.2+0.029*13怎样用简便方法
最佳答案
- 五星知识达人网友:西岸风
- 2021-11-08 17:14
2.9*0.45+0.29*4.2+0.029*13
=2.9*0.45+2.9*0.42+2.9*0.13
=2.9*(0.45+0.42+0.13)
=2.9*1
=2.9
=2.9*0.45+2.9*0.42+2.9*0.13
=2.9*(0.45+0.42+0.13)
=2.9*1
=2.9
全部回答
- 1楼网友:琴狂剑也妄
- 2021-11-08 17:43
2.9*0.45+0.29*4.2+0.029*13
=2.9*0.45+(0.29*10)*(4.2/10)+(0.029*100)*(13/100)
=2.9*0.45+2.9*0.42+2.9*0.13
=2.9*(0.45+0.42+0.13)
=2.9*1
=2.9
=2.9*0.45+(0.29*10)*(4.2/10)+(0.029*100)*(13/100)
=2.9*0.45+2.9*0.42+2.9*0.13
=2.9*(0.45+0.42+0.13)
=2.9*1
=2.9
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