Keystones — Lintel
Five GCSE retrieval questions · 26 December 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.036
Answer: 3.6 × 10^-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 12
Answer: (x + 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 29cm, angle = 33°. Find opposite
Answer: 18.8cm -
4. Ratio Mixed ratio problems
In ratio 1:1:2, what fraction is the second part?
Answer: 1⁄4 -
5. Statistics Mean
Calculate the mean of: 46, 42, 49, 21, 33, 47, 12, 35
Answer: 35.6