Study Notes
Measurements in geometry involve understanding units of length, mass, and capacity, as well as time. The metric system is used for these measurements.
- Metre (m) — the standard unit of length in the metric system. Example: The distance between two cities is measured in kilometres, where 1 km = 1000 m.
- Gram (g) — the standard unit of mass in the metric system. Example: The mass of a small object like a pencil can be measured in grams.
- Litre (L) — the standard unit of capacity in the metric system. Example: A bottle of water might have a capacity of 1 litre.
- Second (s) — the unit of time used to measure short durations. Example: The second hand on a clock measures time in seconds.
Exam Tips
Key Definitions to Remember
- 1 km = 1000 m
- 1 kg = 1000 g
- 1 kL = 1000 L
Common Confusions
- Confusing the conversion factors between units, such as metres to centimetres.
- Mixing up the units of mass and capacity.
Typical Exam Questions
- How many metres are in 3 kilometres? 3000 metres
- Convert 5000 millilitres to litres. 5 litres
- What is the mass in grams of 2.5 kilograms? 2500 grams
What Examiners Usually Test
- Ability to convert between different units of measurement.
- Understanding of the metric system and its standard units.
- Application of time conversions between 12-hour and 24-hour formats.