Keystones — Lintel
Five GCSE retrieval questions · 15 April 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00056
Answer: 5.6 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 8
Answer: (x - 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 11cm, angle = 50°. Find opposite
Answer: 13.cm -
4. Ratio Mixed ratio problems
£259.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £74.00 -
5. Statistics Mean
Calculate the mean of: 9, 38, 47, 42, 34, 6
Answer: 29.3