Keystones — Lintel
Five GCSE retrieval questions · 1 June 2025 · mathsvault.uk/keystones
-
1. Number Converting to standard form
9700000
Answer: 9.7 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 35
Answer: (x + 7)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 31cm, angle = 64°. Find adjacent side
Answer: 13.6cm -
4. Ratio Mixed ratio problems
Express the first part of 5:4 as a fraction in simplest form
Answer: 5⁄9 -
5. Statistics Mean
Calculate the mean of: 44, 20, 24, 16, 21, 13, 8, 26
Answer: 21.5