Keystones — Lintel
Five GCSE retrieval questions · 4 January 2016 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 76,000 in standard form
Answer: 7.6 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 88
Answer: (x + 11)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 12cm, angle = 31°. Find opposite. Give your answer to 2 decimal places
Answer: 7.21cm -
4. Ratio Mixed ratio problems
£343.00 is shared between A and B in the ratio 5:2. How much does A receive?
Answer: £245.00 -
5. Statistics Mean
Calculate the mean of: 40, 47, 50, 10, 10, 28, 13, 31. Give your answer to 2 decimal places
Answer: 28.63