Keystones — Cornerstone
Five GCSE retrieval questions · 21 January 2026 · mathsvault.uk/keystones
-
1. Number
What is the missing number: 88 + ? = 180
Answer: 92 -
2. Algebra
For y = x³ + 2, calculate y when x = 2
Answer: y = 10 -
3. Geometry
Opposite = 15cm, adjacent = 14cm. Calculate the angle
Answer: 47° -
4. Ratio
Simplify the ratio 21:18
Answer: 7:6 -
5. Statistics
Calculate the range of: 27, 62, 83, 58, 53, 23
Answer: 60