Page 29 - Genius PBD - Mathematics Year 4

Theme: Measurement and Geometry
UNIT 5 Length, Mass and Volume of Liquid

Genius Notes Find the difference between
2 635 m and 4 km 52 m.

1. Length

The measurement of an object or the distance between two points

Units of length

Millimetre, mm Centimetre, cm Metre, m Kilometre, km

• Unit used to measure the • Unit used to measure • Unit used to
length or the height of a the length or the measure the
small object. height of objects distance.
• Example: mostly found in daily • Example:
the thickness of a book, life. the distance
the length of a pencil • Example: between Kuala
the length and the Lumpur to Johor,
width of a classroom, the length of
the height of Menara Penang Bridge
Kuala Lumpur
Relationship

× 10

cm mm Relationship
× 1 000
÷ 10
km m

÷ 1 000

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05 Genius PBD Maths Yr4.indd 80 27/10/2022 10:16 AM