Keystones — Lintel
Five GCSE retrieval questions · 18 October 2022 · mathsvault.uk/keystones
-
1. Number Converting to standard form
88000
Answer: 8.8 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x + 24
Answer: (x - 6)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 23cm, angle = 63°. Find adjacent side
Answer: 10.4cm -
4. Ratio Mixed ratio problems
£280.00 is shared between A and B in the ratio 3:5. How much does A receive?
Answer: £105.00 -
5. Statistics Mean
The mean of 4 numbers is 26. If 3 of them are 19, 49, 45, what is the missing number?
Answer: -9