巧算:7.24×0.1+0.5×72.4+0.049×724=

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/19 21:19:20
巧算:7.24×0.1+0.5×72.4+0.049×724=巧算:7.24×0.1+0.5×72.4+0.049×724=巧算:7.24×0.1+0.5×72.4+0.049×724=7.24×0.

巧算:7.24×0.1+0.5×72.4+0.049×724=
巧算:7.24×0.1+0.5×72.4+0.049×724=

巧算:7.24×0.1+0.5×72.4+0.049×724=
7.24×0.1+0.5×72.4+0.049×724=7.24×0.1+0.5×72.4+0.049×724 =724×(0.001+0.05+0.049)=724×0.1=72.4