Keystones — Bedrock
Five GCSE retrieval questions · 26 March 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 1.6 + 2.9
Answer: 1.6 + 2.9 = 4.5 -
2. Algebra
Factorise: 16x + 20
Answer: 4(4x + 5) -
3. Geometry
Opposite = 8cm, hypotenuse = 9.2cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Simplify the ratio 12:16
Answer: 3:4 -
5. Statistics
What is the probability of rolling a 1 on a fair die?
Answer: 1⁄6