Keystones — Lintel
Five GCSE retrieval questions · 22 March 2015 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 0.000011 in standard form
Answer: 1.1 × 10-5 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 35
Answer: (x + 7)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 17cm, angle = 48°. Find adjacent side. Give your answer to 2 decimal places
Answer: 11.38cm -
4. Ratio Mixed ratio problems
£154.00 is shared between A and B in the ratio 4:3. How much does A receive?
Answer: £88.00 -
5. Statistics Mean
Calculate the mean of: 8, 49, 9, 33, 27, 29, 27, 18
Answer: 25