9.9乘以0.45简便计算
答案:3 悬赏:40
解决时间 2021-01-14 20:49
- 提问者网友：锁深秋
- 2021-01-14 00:25
9.9乘以0.45简便计算
最佳答案
- 二级知识专家网友：洒脱疯子
- 2021-01-14 00:45
9.9*0.45
=(10-0.1)*0.45
=10*0.45-0.1*0.45
=4.5-0.045
=4.455
=(10-0.1)*0.45
=10*0.45-0.1*0.45
=4.5-0.045
=4.455
全部回答
- 1楼网友：行雁书
- 2021-01-14 02:07
9.9x0.45
=（10-0.1）x0.45
=10x0.45-0.1x0.45
=4.5-0.045
=4.455
=（10-0.1）x0.45
=10x0.45-0.1x0.45
=4.5-0.045
=4.455
- 2楼网友：持酒劝斜阳
- 2021-01-14 01:33
9.9×0.45
=(10-0.1)×0.45
=10×0.45-0.1×0.45
=4.5-0.045
=4.455
=(10-0.1)×0.45
=10×0.45-0.1×0.45
=4.5-0.045
=4.455
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