Keystones — Bedrock
Five GCSE retrieval questions · 31 March 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 81 + 99
Answer: 81 + 99 = 180 -
2. Algebra
Expand: 7(x + 6)
Answer: 7x + 42 -
3. Geometry
Opposite = 9cm, hypotenuse = 18cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Calculate 25% of 51
Answer: 12.75 -
5. Statistics
Find the mean of: 8, 6, 17
Answer: 10.333333333333