**
A ruler or a scale looks like this
**

In a scale, there are

- Markings of 0 to 15 of 1 cm each
- Between 0 to 1 cm, we have 10 markings of 1 mm each

1 cm = 10 mm

∴ 1/10 cm = 1mm

1 mm = 1/10 cm

1 mm = 0.1 cm

Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class