Keystones — Lintel
Five GCSE retrieval questions · 25 July 2012 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 89,000 in standard form
Answer: 8.9 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 8x - 33
Answer: (x + 11)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 56°. Find opposite. Give your answer to 2 decimal places
Answer: 32.62cm -
4. Ratio Mixed ratio problems
£273.00 is shared between A and B in the ratio 4:3. How much does A receive?
Answer: £156.00 -
5. Statistics Mean
Calculate the mean of: 15, 48, 16, 23, 25, 44, 39, 42
Answer: 31.5