Keystones — Lintel
Five GCSE retrieval questions · 30 May 2014 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 2,700,000 in standard form
Answer: 2.7 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 88
Answer: (x + 11)(x - 8) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 18cm, angle = 50°. Find adjacent side. Give your answer to 2 decimal places
Answer: 11.57cm -
4. Ratio Mixed ratio problems
£125.00 is shared between A and B in the ratio 3:2. How much does A receive?
Answer: £75.00 -
5. Statistics Mean
Calculate the mean of: 19, 37, 50, 32, 26, 18. Give your answer to 2 decimal places
Answer: 30.33