Keystones — Lintel
Five GCSE retrieval questions · 16 November 2021 · mathsvault.uk/keystones
-
1. Number Converting to standard form
270000
Answer: 2.7 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 8
Answer: (x - 2)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 38cm, angle = 51°. Find adjacent side
Answer: 23.9cm -
4. Ratio Mixed ratio problems
£256.00 is shared between A and B in the ratio 5:3. How much does A receive?
Answer: £160.00 -
5. Statistics Mean
The mean of 4 numbers is 23. If 3 of them are 38, 49, 23, what is the missing number?
Answer: -18