Keystones — Lintel
Five GCSE retrieval questions · 7 May 2012 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 0.00027 in standard form
Answer: 2.7 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 6
Answer: (x + 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 21cm, angle = 65°. Find adjacent side. Give your answer to 2 decimal places
Answer: 8.87cm -
4. Ratio Mixed ratio problems
£150.00 is shared between A and B in the ratio 1:2. How much does A receive?
Answer: £50.00 -
5. Statistics Mean
Calculate the mean of: 9, 12, 8, 36, 6, 30, 26, 30. Give your answer to 2 decimal places
Answer: 19.63