Keystones — Lintel
Five GCSE retrieval questions · 16 March 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
92000000
Answer: 9.2 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 5
Answer: (x + 5)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 17cm, angle = 44°. Find opposite
Answer: 16.4cm -
4. Ratio Mixed ratio problems
Simplify: 12:8:10
Answer: 6:4:5 -
5. Statistics Mean
Calculate the mean of: 11, 29, 10, 32, 10, 43
Answer: 22.5