Keystones — Cornerstone
Five GCSE retrieval questions · 9 August 2025 · mathsvault.uk/keystones
-
1. Number
What is the missing number: 49 + ? = 170
Answer: 121 -
2. Algebra
Expand: 3(5x + 4)
Answer: 15x + 12 -
3. Geometry
Find the distance between (2, 3) and (5, 9)
Answer: 6.71 -
4. Ratio
Find 45% of 402
Answer: 180.9 -
5. Statistics
Calculate the mean of: 29, 27, 35, 33, 14, 17
Answer: 25.8