Keystones — Lintel
Five GCSE retrieval questions · 16 February 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
32000000
Answer: 3.2 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 8
Answer: (x - 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 29cm, angle = 50°. Find opposite
Answer: 34.6cm -
4. Ratio Mixed ratio problems
£215.00 is shared between A and B in the ratio 3:2. How much does A receive?
Answer: £129.00 -
5. Statistics Mean
Calculate the mean of: 42, 19, 33, 35, 37, 21, 10, 6
Answer: 25.4