Keystones — Lintel
Five GCSE retrieval questions · 1 January 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0082
Answer: 8.2 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 6
Answer: (x + 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 38cm, angle = 63°. Find adjacent side
Answer: 17.3cm -
4. Ratio Mixed ratio problems
Simplify: 4:10:8
Answer: 2:5:4 -
5. Statistics Mean
The mean of 5 numbers is 27. If 4 of them are 44, 21, 42, 18, what is the missing number?
Answer: 10