Keystones — Lintel
Five GCSE retrieval questions · 18 April 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
36000000
Answer: 3.6 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 24
Answer: (x + 6)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 32cm, angle = 31°. Find adjacent side
Answer: 27.4cm -
4. Ratio Mixed ratio problems
Divide 102 in the ratio 4:1:1
Answer: 68, 17 and 17 -
5. Statistics Mean
Calculate the mean of: 21, 39, 11, 32, 19, 30, 14, 38
Answer: 25.5