Keystones — Lintel
Five GCSE retrieval questions · 28 December 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0051
Answer: 5.1 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 36
Answer: (x - 6)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 39cm, angle = 31°. Find adjacent side
Answer: 33.4cm -
4. Ratio Mixed ratio problems
£261.00 is shared between A and B in the ratio 4:5. How much does A receive?
Answer: £116.00 -
5. Statistics Mean
The mean of 4 numbers is 31. If 3 of them are 34, 23, 32, what is the missing number?
Answer: 35