Keystones — Lintel
Five GCSE retrieval questions · 20 June 2025 · mathsvault.uk/keystones
-
1. Number Converting to standard form
49000000
Answer: 4.9 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x + 21
Answer: (x - 7)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 29cm, angle = 46°. Find opposite
Answer: 30cm -
4. Ratio Mixed ratio problems
£329.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £94.00 -
5. Statistics Mean
Calculate the mean of: 39, 6, 43, 13, 27, 9, 37
Answer: 24.9