Keystones — Cornerstone
Five GCSE retrieval questions · 28 July 2026 · mathsvault.uk/keystones
-
1. Number Multiplying fractions
Calculate: 5⁄9 × 4
Answer: 20⁄9 -
2. Algebra Expanding single brackets
Expand: 5(x + 7)
Answer: 5x + 35 -
3. Geometry Pythagoras — short side
In a right triangle, if c = 10cm and a = 6cm, find b
Answer: 8cm -
4. Ratio Ratio given the difference
In ratio 3:1, the difference between shares is 56. What are the shares?
Answer: 84 and 28 -
5. Statistics Range
Find the range of: 23, 31, 16, 10, 24
Answer: 21