Keystones — Lintel
Five GCSE retrieval questions · 9 February 2025 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.00066
Answer: 6.6 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 30
Answer: (x - 5)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 26cm, angle = 40°. Find opposite
Answer: 21.8cm -
4. Ratio Mixed ratio problems
Simplify: 9:15:9
Answer: 3:5:3 -
5. Statistics Mean
Calculate the mean of: 14, 46, 14, 47, 48, 48, 6
Answer: 31.9