Keystones — Cornerstone
Five GCSE retrieval questions · 24 December 2025 · mathsvault.uk/keystones
-
1. Number
Calculate: 412 + 391
Answer: 412 + 391 = 803 -
2. Algebra
Find the next term: 23, 27, 31, 35, ...
Answer: 39 -
3. Geometry
Opposite = 5cm, hypotenuse = 7.cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Find 30% of 451
Answer: 135.3 -
5. Statistics
Find the range of: 19, 27, 18, 15, 19
Answer: 12