12.5x0.38+1.25x4.2+0.125x20如何用简便方法计算

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/09 05:00:50
12.5x0.38+1.25x4.2+0.125x20如何用简便方法计算12.5x0.38+1.25x4.2+0.125x20如何用简便方法计算12.5x0.38+1.25x4.2+0.125x20如

12.5x0.38+1.25x4.2+0.125x20如何用简便方法计算
12.5x0.38+1.25x4.2+0.125x20如何用简便方法计算

12.5x0.38+1.25x4.2+0.125x20如何用简便方法计算
12.5x0.38+1.25x4.2+0.125x20
=12.5×0.38+12.5×0.42+12.5×0.2
=12.5×(0.38+0.42+0.2)
=12.5×1
=12.5