Keystones — Lintel
Five GCSE retrieval questions · 27 March 2025 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.036
Answer: 3.6 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 28
Answer: (x - 4)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 38cm, angle = 57°. Find adjacent side
Answer: 20.7cm -
4. Ratio Mixed ratio problems
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 19, 37, 6, 33, 49, 49
Answer: 32.2