Solve division number sentences involving unit of length and one-digit number involving millimetre, centimetre, metre and kilometre

Length

5.1

Length

We will learn about the units of length found in mathematics.

Units in length:

Kilometre (km)
Metre (m)
Centimetre (cm)
Millimetre (mm)

Before performing addition, subtraction, multiplication or division operations involving different units, we need to convert all units of measurement to the same unit. So how do we change it?

EXAMPLE

1.

Convert \(90\) mm to cm.

\(90\) mm
= \((90\div10)\) cm
= \(9\) cm

2.

Convert \(5\) m \(30\) cm to m.

\(30\) cm
= \((30\div100)\) m
= \(0.3\) m

\(5\) m \(30\) cm
= \(5\) m + \(0.3\) m
= \(5.3\) m

Length

5.1

Length

We will learn about the units of length found in mathematics.

Units in length:

Kilometre (km)
Metre (m)
Centimetre (cm)
Millimetre (mm)

Before performing addition, subtraction, multiplication or division operations involving different units, we need to convert all units of measurement to the same unit. So how do we change it?

EXAMPLE

1.

Convert \(90\) mm to cm.

\(90\) mm
= \((90\div10)\) cm
= \(9\) cm

2.

Convert \(5\) m \(30\) cm to m.

\(30\) cm
= \((30\div100)\) m
= \(0.3\) m

\(5\) m \(30\) cm
= \(5\) m + \(0.3\) m
= \(5.3\) m

Chapter : Measurement

Topic : Solve division number sentences involving unit of length and one-digit number involving millimetre, centimetre, metre and kilometre

Year 4 Mathematics

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