Keystones — Lintel
Five GCSE retrieval questions · 1 January 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 46,000 in standard form
Answer: 4.6 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 2x - 35
Answer: (x + 5)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 30cm, angle = 61°. Find adjacent side. Give your answer to 2 decimal places
Answer: 14.54cm -
4. Ratio Mixed ratio problems
Divide 91 in the ratio 4:1:2
Answer: 52, 13 and 26 -
5. Statistics Mean
Calculate the mean of: 15, 7, 29, 48, 30, 46. Give your answer to 2 decimal places
Answer: 29.17