Keystones — Lintel
Five GCSE retrieval questions · 3 May 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
13000
Answer: 1.3 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 30
Answer: (x + 6)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 37°. Find opposite
Answer: 16.6cm -
4. Ratio Mixed ratio problems
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics Mean
The mean of 5 numbers is 25. If 4 of them are 25, 24, 35, 15, what is the missing number?
Answer: 26