Keystones — Lintel
Five GCSE retrieval questions · 20 October 2010 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 6,700,000 in standard form
Answer: 6.7 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x + 16
Answer: (x - 2)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 21cm, angle = 42°. Find opposite. Give your answer to 2 decimal places
Answer: 18.91cm -
4. Ratio Mixed ratio problems
£189.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £54.00 -
5. Statistics Mean
Calculate the mean of: 46, 22, 23, 28, 47, 29
Answer: 32.5