Keystones — Lintel
Five GCSE retrieval questions · 8 October 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
870000
Answer: 8.7 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 16
Answer: (x - 4)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 53°. Find opposite
Answer: 29.2cm -
4. Ratio Mixed ratio problems
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 38, 31, 30, 5, 10, 44
Answer: 26.3