math/概念/单位.md
2022-08-19 15:03:39 +08:00

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# 单位
**做题时应单位统一!!!**
## 长度单位
$1米(m)=10分米(dm)=100厘米(cm)=1000毫米(mm)=0.001千米(km)$
## 质量单位
$ 1吨(t) = 1000千克(kg) $
$ 1千克 = 1000克(g) $
$ 1千克 = 2斤 $
$ 1斤 = 10两 = 500克 $
一个鸡蛋约50克1两
## 时间单位
见[时间单位](时间.md#单位)