Keystones — Lintel
Five GCSE retrieval questions · 22 March 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00052
Answer: 5.2 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 35
Answer: (x - 5)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 27cm, angle = 26°. Find adjacent side
Answer: 24.3cm -
4. Ratio Mixed ratio problems
Divide 132 in the ratio 4:3:4
Answer: 48, 36 and 48 -
5. Statistics Mean
Calculate the mean of: 13, 42, 40, 11, 29, 13
Answer: 24.7