Keystones — Lintel
Five GCSE retrieval questions · 2 June 2022 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.00068
Answer: 6.8 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 30
Answer: (x - 5)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 25cm, angle = 49°. Find opposite
Answer: 28.8cm -
4. Ratio Mixed ratio problems
Divide 144 in the ratio 1:3:2
Answer: 24, 72 and 48 -
5. Statistics Mean
Calculate the mean of: 16, 25, 35, 22, 40, 10, 46
Answer: 27.7