4.7x2.8+3.6x9.4-1.5怎样简便计算
答案:2 悬赏:30
解决时间 2021-03-24 02:01
- 提问者网友:我的未来我做主
- 2021-03-23 12:22
4.7x2.8+3.6x9.4-1.5怎样简便计算
最佳答案
- 二级知识专家网友:英雄的欲望
- 2021-03-23 13:57
4.7x2.8+3.6x9.4-1.5
=2.8x4.7+7.2x4.7-1.5
=(2.8+7.2)x4.7-1.5
=10x4.7-1.5
=47-1.5
=45.5
=2.8x4.7+7.2x4.7-1.5
=(2.8+7.2)x4.7-1.5
=10x4.7-1.5
=47-1.5
=45.5
全部回答
- 1楼网友:蕴藏春秋
- 2021-03-23 14:13
4.7x2.8+3.6x9.4-1.5
=4.7x2.8+3.6x4.7×2-1.5
=4.7×(2.8+7.2)-1.5
=4.7×10-1.5
=47-1.5
=45.5
=4.7x2.8+3.6x4.7×2-1.5
=4.7×(2.8+7.2)-1.5
=4.7×10-1.5
=47-1.5
=45.5
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