Units and conversions · Grade 4
In Grade 4 you learn: converting km, m, cm and mm.
Metric units are built on 10, 100 and 1,000, so converting between them is just multiplying or dividing. Area and volume units need extra care.
Key facts
- Length: 10 mm = 1 cm, 100 cm = 1 m, 1,000 m = 1 km.
- Big unit → small unit: multiply. Small unit → big unit: divide.