Keystones — Lintel
Five GCSE retrieval questions · 10 April 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
8800000
Answer: 8.8 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 20
Answer: (x + 5)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 18cm, angle = 51°. Find adjacent side
Answer: 11.3cm -
4. Ratio Mixed ratio problems
£308.00 is shared between A and B in the ratio 4:3. How much does A receive?
Answer: £176.00 -
5. Statistics Mean
The mean of 6 numbers is 38. If 5 of them are 21, 31, 15, 40, 21, what is the missing number?
Answer: 100