Keystones — Lintel
Five GCSE retrieval questions · 10 July 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
13000000
Answer: 1.3 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 56
Answer: (x + 8)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 47°. Find opposite
Answer: 23.6cm -
4. Ratio Mixed ratio problems
Simplify: 24:12:12
Answer: 2:1:1 -
5. Statistics Mean
The mean of 4 numbers is 25. If 3 of them are 38, 33, 36, what is the missing number?
Answer: -7