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如何画数轴
更新时间: 2020-09-24 00:00:00  

1、在纸上用直尺画一条直线;

2、在直线上靠近中间的地方选择一个点,标记为零,在直线的右端画上一个向右的箭头表示正方向;

3、以零为起点,确定好单位长度,并利用刻度尺辅助绘制,向右标出一,二,三……,向左标出负一,负二,负三……

4、标记好刻度之后,数轴就画好了。

关键词: 如何 数轴

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