Keystones — Lintel
Five GCSE retrieval questions · 22 July 2022 · mathsvault.uk/keystones
-
1. Number Converting to standard form
110000
Answer: 1.1 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 3
Answer: (x + 3)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 10cm, angle = 40°. Find opposite
Answer: 8.4cm -
4. Ratio Mixed ratio problems
£273.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £78.00 -
5. Statistics Mean
The mean of 6 numbers is 33. If 5 of them are 28, 48, 16, 20, 26, what is the missing number?
Answer: 60