Keystones — Lintel
Five GCSE retrieval questions · 21 June 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.079
Answer: 7.9 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 28
Answer: (x - 7)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 29cm, angle = 40°. Find opposite
Answer: 24.3cm -
4. Ratio Mixed ratio problems
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 5, 34, 33, 8, 19, 42, 17, 45
Answer: 25.4