Keystones — Lintel
Five GCSE retrieval questions · 30 December 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
26000
Answer: 2.6 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 6x - 16
Answer: (x + 8)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 20cm, angle = 61°. Find adjacent side
Answer: 9.7cm -
4. Ratio Mixed ratio problems
£196.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £56.00 -
5. Statistics Mean
Calculate the mean of: 43, 50, 44, 15, 48, 37, 48, 24
Answer: 38.6