Keystones — Lintel
Five GCSE retrieval questions · 27 June 2022 · mathsvault.uk/keystones
-
1. Number Converting to standard form
5200000
Answer: 5.2 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 3
Answer: (x + 3)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 14cm, angle = 36°. Find opposite
Answer: 10.2cm -
4. Ratio Mixed ratio problems
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics Mean
The mean of 5 numbers is 34. If 4 of them are 34, 38, 50, 24, what is the missing number?
Answer: 24