Keystones — Lintel
Five GCSE retrieval questions · 19 December 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00065
Answer: 6.5 × 10^-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 16
Answer: (x - 4)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 21cm, angle = 41°. Find adjacent side
Answer: 15.8cm -
4. Ratio Mixed ratio problems
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 5, 45, 7, 15, 22, 34, 26
Answer: 22