Keystones — Lintel
Five GCSE retrieval questions · 15 February 2019 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.0035
Answer: 3.5 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 8
Answer: (x - 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 23cm, angle = 49°. Find adjacent side
Answer: 15.cm -
4. Ratio Mixed ratio problems
£312.00 is shared between A and B in the ratio 5:3. How much does A receive?
Answer: £195.00 -
5. Statistics Mean
The mean of 4 numbers is 21. If 3 of them are 40, 41, 49, what is the missing number?
Answer: -46