Keystones — Cornerstone
Five GCSE retrieval questions · 18 January 2025 · mathsvault.uk/keystones
-
1. Number
What is the missing number: 83 + ? = 134
Answer: 51 -
2. Algebra
Solve: 6x = 72
Answer: x = 12 -
3. Geometry
Opposite = 15cm, adjacent = 16cm. Calculate the angle
Answer: 43.2° -
4. Ratio
Simplify: 4:6:8
Answer: 2:3:4 -
5. Statistics
Calculate the mean of: 49, 50, 19, 14, 20, 7, 15, 5
Answer: 22.4