Keystones — Lintel
Five GCSE retrieval questions · 1 August 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 1⁄5 + 2⁄3 + 2⁄3
Answer: 23⁄15 -
2. Algebra
Find the next term: 1, 4, 10, 19, ...
Answer: 31 -
3. Geometry
Calculate perimeter: two sides are 12cm and 12cm at right angles
Answer: 41cm -
4. Ratio
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics
A bag has 3 red and 3 blue balls. What is the probability of picking a red ball?
Answer: 1⁄2