2.9*0.45+0.29*4.2+0.029*13用简便方法计算怎么算
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解决时间 2021-01-13 15:04
- 提问者网友:雪舞兮
- 2021-01-13 07:50
2.9*0.45+0.29*4.2+0.029*13用简便方法计算怎么算
最佳答案
- 五星知识达人网友:话散在刀尖上
- 2021-01-13 08:36
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
全部回答
- 1楼网友:行路难
- 2021-01-13 11:50
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
- 2楼网友:罪歌
- 2021-01-13 11:22
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
- 3楼网友:拜訪者
- 2021-01-13 10:17
2.9*0.45+2.9*0.42+2.9*0.13=2.9*(0.45+0.42+0.13)=2.9
- 4楼网友:你可爱的野爹
- 2021-01-13 08:42
2.9*(0.45+0.42+0.13)
=2.9*1
=2.9
=2.9*1
=2.9
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