Keystones — Cornerstone
Five GCSE retrieval questions · 21 June 2025 · mathsvault.uk/keystones
-
1. Number
Calculate: 556 + 457
Answer: 556 + 457 = 1013 -
2. Algebra
Solve: x + 4 = 8
Answer: x = 4 -
3. Geometry
Find the area of a right triangle with base 7cm and height 7cm
Answer: 24.5cm² -
4. Ratio
Find 83% of 454
Answer: 376.82 -
5. Statistics
Calculate the mean of: 45, 17, 10, 30, 18, 11, 12, 45
Answer: 23.5