Topics / Maths
Measurement
Measurement questions test converting between units and applying them to length, mass, capacity and area. The key is knowing the conversion facts and choosing the direction of the conversion carefully.
What is tested
- Converting between metric units (km/m/cm/mm, kg/g, l/ml)
- Reading scales
- Area and perimeter in mixed units
Worked example
A jug holds 1.75 litres. How many 250 ml glasses can be filled?
- Convert: 1.75 l = 1,750 ml.
- 1,750 ÷ 250 = 7.
Answer: 7 glasses
Exam-day checklist
- Convert everything to the same unit first.
- Multiply to go to a smaller unit, divide to go to a larger one.
- Estimate: is the answer sensible?
- Write the unit in your answer.
Common mistakes
- Mixing units in one calculation.
- Multiplying when you should divide.
- Forgetting area units are squared.
Try it yourself
1. Convert 2.5 km to metres.
Show answer
2,500 m
1 km = 1,000 m, so 2.5 × 1,000 = 2,500.
2. A rectangle is 8 m by 350 cm. What is its area in m²?
Show answer
28 m²
350 cm = 3.5 m, and 8 × 3.5 = 28.
Practise measurement with school-style questions
Create a free account for topic-by-topic practice, timed mocks in your target school's format, and a weekly report on what to focus on next.
More topic guides
11Plus-Help - adaptive 11+ practice and school-specific mock exams for Greater London grammar schools.
Schools · Topics · Stage 2 guide · Privacy · Terms · Create an account
Practice materials are original and independently produced. They are not official school papers and do not guarantee admission. School arrangements can change; parents should check each school’s current admissions information.