Keystones — Lintel
Five GCSE retrieval questions · 26 June 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00097
Answer: 9.7 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 18
Answer: (x - 6)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 38cm, angle = 55°. Find adjacent side
Answer: 21.8cm -
4. Ratio Mixed ratio problems
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 44, 12, 29, 21, 39, 28
Answer: 28.8