Keystones — Lintel
Five GCSE retrieval questions · 6 September 2017 · mathsvault.uk/keystones
-
1. Number Converting to standard form
Write 0.00048 in standard form
Answer: 4.8 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 2x - 8
Answer: (x + 2)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 26cm, angle = 32°. Find opposite. Give your answer to 2 decimal places
Answer: 16.25cm -
4. Ratio Mixed ratio problems
£175.00 is shared between A and B in the ratio 5:2. How much does A receive?
Answer: £125.00 -
5. Statistics Mean
Calculate the mean of: 19, 16, 6, 11, 45, 14, 44, 19
Answer: 21.75