Keystones — Lintel
Five GCSE retrieval questions · 9 July 2020 · mathsvault.uk/keystones
-
1. Number Converting to standard form
22000
Answer: 2.2 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 20
Answer: (x + 5)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 18cm, angle = 49°. Find opposite
Answer: 20.7cm -
4. Ratio Mixed ratio problems
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 40, 42, 36, 10, 17, 5
Answer: 25