Keystones — Lintel
Five GCSE retrieval questions · 12 July 2012 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 770,000 in standard form
Answer: 7.7 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 3x - 40
Answer: (x + 5)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 27cm, angle = 55°. Find opposite. Give your answer to 2 decimal places
Answer: 38.56cm -
4. Ratio Mixed ratio problems
£215.00 is shared between A and B in the ratio 3:2. How much does A receive?
Answer: £129.00 -
5. Statistics Mean
Calculate the mean of: 29, 41, 23, 5, 18, 7, 41, 14
Answer: 22.25