Keystones — Lintel
Five GCSE retrieval questions · 26 December 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 402 + 685
Answer: 402 + 685 = 1087 -
2. Algebra
What is the next term? 2, 4, 8, 16, ...
Answer: 32 -
3. Geometry
Opposite = 16cm, adjacent = 18cm. Calculate the angle
Answer: 41.6° -
4. Ratio
Find 44% of 163
Answer: 71.72 -
5. Statistics
A spinner has 5 red, 5 blue and 2 green sections. Probability of landing on red?
Answer: 5⁄12