Keystones — Cornerstone
Five GCSE retrieval questions · 2 January 2025 · mathsvault.uk/keystones
-
1. Number
Calculate: 64 + 21
Answer: 64 + 21 = 85 -
2. Algebra
Solve: 3x = 42
Answer: x = 14 -
3. Geometry
Opposite = 10cm, adjacent = 10cm. Calculate the angle
Answer: 45° -
4. Ratio
Simplify: 9:12:18
Answer: 3:4:6 -
5. Statistics
Calculate the mean of: 37, 21, 37, 42, 25, 23, 17, 7
Answer: 26.1