9.9*0.81简便方法计算
答案:3 悬赏:30 手机版
解决时间 2021-04-06 19:38
- 提问者网友：寂寞梧桐
- 2021-04-06 01:20
9.9*0.81简便方法计算
最佳答案
- 五星知识达人网友：詩光轨車
- 2021-04-06 01:57
9.9*0.81
=（10-0.1）×0.81
=10×0.81-0.1×0.81
=8.1-0.081
=8.019
=（10-0.1）×0.81
=10×0.81-0.1×0.81
=8.1-0.081
=8.019
全部回答
- 1楼网友：舊物识亽
- 2021-04-06 03:12
=(10-0.1)*0.81
=10*0.81-0.1*0.81
=8.1-0.081
=8,019
=10*0.81-0.1*0.81
=8.1-0.081
=8,019
- 2楼网友：千夜
- 2021-04-06 02:22
9.9*0.81
=（10-0.1）×0.81
=10×0.81-0.1×0.81
=8.1-0.081
=8.019
=（10-0.1）×0.81
=10×0.81-0.1×0.81
=8.1-0.081
=8.019
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