Keystones — Lintel
Five GCSE retrieval questions · 12 January 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
87000
Answer: 8.7 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 36
Answer: (x - 6)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 18cm, angle = 29°. Find adjacent side
Answer: 15.7cm -
4. Ratio Mixed ratio problems
Divide 168 in the ratio 4:1:2
Answer: 96, 24 and 48 -
5. Statistics Mean
Calculate the mean of: 42, 31, 13, 14, 45, 19, 39
Answer: 29