Keystones — Lintel
Five GCSE retrieval questions · 10 March 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.025
Answer: 2.5 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 12
Answer: (x - 6)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 40cm, angle = 37°. Find adjacent side
Answer: 31.9cm -
4. Ratio Mixed ratio problems
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 39, 30, 41, 11, 5, 29, 48
Answer: 29