Keystones — Lintel
Five GCSE retrieval questions · 15 August 2017 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 0.06 in standard form
Answer: 6 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 21x + 110
Answer: (x - 10)(x - 11) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 30cm, angle = 65°. Find adjacent side. Give your answer to 2 decimal places
Answer: 12.68cm -
4. Ratio Mixed ratio problems
£138.00 is shared between A and B in the ratio 1:2. How much does A receive?
Answer: £46.00 -
5. Statistics Mean
Calculate the mean of: 12, 8, 50, 18, 7, 36, 18, 10. Give your answer to 2 decimal places
Answer: 19.88