Learning objectives
Measure and convert common units used in everyday situations.
By the end of this course, you should be able to explain the key ideas, use the methods and answer practice questions.
Lesson notes
Length
Common metric units include millimetres (mm), centimetres (cm), metres (m) and kilometres (km). 100 cm = 1 m.
Mass
Mass is commonly measured in grams (g) and kilograms (kg). 1,000 g = 1 kg.
Capacity
Capacity is often measured in millilitres (ml) and litres (l). 1,000 ml = 1 l.
Time
60 seconds = 1 minute; 60 minutes = 1 hour; 24 hours = 1 day.
Temperature
Temperature is commonly measured in degrees Celsius (°C).
Worked example
Convert 2.5 km to metres: 2.5 × 1,000 = 2,500 m.