Keystones — Lintel
Five GCSE retrieval questions · 13 August 2020 · mathsvault.uk/keystones
-
1. Number Converting to standard form
3100000
Answer: 3.1 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 15
Answer: (x + 5)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 42°. Find opposite
Answer: 19.8cm -
4. Ratio Mixed ratio problems
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 8, 33, 23, 47, 47, 20, 50
Answer: 32.6