Keystones — Lintel
Five GCSE retrieval questions · 17 November 2020 · mathsvault.uk/keystones
-
1. Number Converting to standard form
59000000
Answer: 5.9 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 20
Answer: (x + 5)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 17cm, angle = 41°. Find opposite
Answer: 14.8cm -
4. Ratio Mixed ratio problems
£360.00 is shared between A and B in the ratio 4:5. How much does A receive?
Answer: £160.00 -
5. Statistics Mean
Calculate the mean of: 32, 17, 50, 6, 25, 39, 45, 14
Answer: 28.5