Keystones — Lintel
Five GCSE retrieval questions · 17 April 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 997 + 869
Answer: 1866 -
2. Algebra
Solve: 8x = 120
Answer: x = 15 -
3. Geometry
Calculate the area of a right triangle with perpendicular sides 11cm and 6cm
Answer: 33cm² -
4. Ratio
Find 39% of 214
Answer: 83.46 -
5. Statistics
A bag has 7 red and 8 blue balls. What is the probability of picking a red ball?
Answer: 7⁄15