用简便算法:3.64×0.8 6.36×0.8-3.8

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/16 02:35:39
用简便算法:3.64×0.8 6.36×0.8-3.8
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用简便算法:3.64×0.8 6.36×0.8-3.8
用简便算法:3.64×0.8 6.36×0.8-3.8

用简便算法:3.64×0.8 6.36×0.8-3.8
3.64×0.8+6.36×0.8-3.8
=(3.64+6.36)×0.8-3.8
=10×0.8-3.8
=8-3.8
=4.2