Keystones — Lintel
Five GCSE retrieval questions · 7 May 2017 · mathsvault.uk/keystones
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1. Number Converting to standard form
Write 0.06 in standard form
Answer: 6 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - x - 56
Answer: (x + 7)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 27cm, angle = 56°. Find opposite. Give your answer to 2 decimal places
Answer: 40.03cm -
4. Ratio Mixed ratio problems
Simplify: 6:18:12
Answer: 1:3:2 -
5. Statistics Mean
The mean of 4 numbers is 35. If 3 of them are 24, 24, 34, what is the missing number?
Answer: 58