Keystones — Lintel
Five GCSE retrieval questions · 2 August 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
6700000
Answer: 6.7 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 3
Answer: (x + 3)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 37cm, angle = 50°. Find adjacent side
Answer: 23.8cm -
4. Ratio Mixed ratio problems
Express the first part of 4:6 as a fraction in simplest form
Answer: 2⁄5 -
5. Statistics Mean
The mean of 4 numbers is 29. If 3 of them are 22, 29, 36, what is the missing number?
Answer: 29