Keystones — Lintel
Five GCSE retrieval questions · 17 February 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 96,000 in standard form
Answer: 9.6 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 12
Answer: (x + 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 37cm, angle = 25°. Find adjacent side. Give your answer to 2 decimal places
Answer: 33.53cm -
4. Ratio Mixed ratio problems
Simplify the ratio 8m : 75cm
Answer: 32:3 -
5. Statistics Mean
Calculate the mean of: 43, 24, 16, 42, 23, 10, 26. Give your answer to 2 decimal places
Answer: 26.29