Keystones — Lintel
Five GCSE retrieval questions · 29 July 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.006
Answer: 6 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 42
Answer: (x + 7)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 36cm, angle = 57°. Find adjacent side
Answer: 19.6cm -
4. Ratio Mixed ratio problems
Divide 128 in the ratio 1:3:4
Answer: 16, 48 and 64 -
5. Statistics Mean
Calculate the mean of: 11, 33, 47, 37, 13, 8, 46
Answer: 27.9