1.8*4.2+1.8*3.7+3.7*4.2的简便计算
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解决时间 2021-03-27 01:38
- 提问者网友:难遇难求
- 2021-03-26 01:26
1.8*4.2+1.8*3.7+3.7*4.2的简便计算
最佳答案
- 五星知识达人网友:三千妖杀
- 2021-03-26 02:12
解: 1.8*4.2+1.8*3.7+3.7*4.2
= 1.8*4.2+3.7*(1.8+4.2)
= 1.8*4.2+3.7*6
=1.8*(4+0.2)+3.7*6
=7.2+0.36+22.2
7.56+22.2
=29.76
= 1.8*4.2+3.7*(1.8+4.2)
= 1.8*4.2+3.7*6
=1.8*(4+0.2)+3.7*6
=7.2+0.36+22.2
7.56+22.2
=29.76
全部回答
- 1楼网友:七十二街
- 2021-03-26 03:33
=1.8*(4.+0.2)+3.7*(1.8+4.2)
=8.2+0.96+3.7*6
=9.16+22.2
=31.36
=8.2+0.96+3.7*6
=9.16+22.2
=31.36
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