Keystones — Lintel
Five GCSE retrieval questions · 8 March 2020 · mathsvault.uk/keystones
-
1. Number Converting to standard form
1400000
Answer: 1.4 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 42
Answer: (x + 7)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 21cm, angle = 38°. Find opposite
Answer: 16.4cm -
4. Ratio Mixed ratio problems
Simplify: 9:15:18
Answer: 3:5:6 -
5. Statistics Mean
Calculate the mean of: 8, 38, 29, 41, 20, 47, 39, 22
Answer: 30.5