Keystones — Lintel
Five GCSE retrieval questions · 17 June 2020 · mathsvault.uk/keystones
-
1. Number Converting to standard form
810000
Answer: 8.1 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 8
Answer: (x - 2)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 34cm, angle = 60°. Find adjacent side
Answer: 17cm -
4. Ratio Mixed ratio problems
£154.00 is shared between A and B in the ratio 5:2. How much does A receive?
Answer: £110.00 -
5. Statistics Mean
The mean of 5 numbers is 27. If 4 of them are 32, 38, 42, 45, what is the missing number?
Answer: -22