Keystones — Cornerstone
Five GCSE retrieval questions · 25 December 2025 · mathsvault.uk/keystones
-
1. Number
Calculate: 57 + 61
Answer: 57 + 61 = 118 -
2. Algebra
Solve: 8x = 96
Answer: x = 12 -
3. Geometry
Opposite = 10cm, adjacent = 17cm. Calculate the angle
Answer: 30.5° -
4. Ratio
Find 28% of 323
Answer: 90.44 -
5. Statistics
Calculate the mean of: 22, 13, 50, 12, 49, 50, 36
Answer: 33.1