Keystones — Lintel
Five GCSE retrieval questions · 1 February 2022 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.00049
Answer: 4.9 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 3
Answer: (x + 3)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 24cm, angle = 37°. Find opposite
Answer: 18.cm -
4. Ratio Mixed ratio problems
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics Mean
The mean of 4 numbers is 36. If 3 of them are 28, 26, 44, what is the missing number?
Answer: 46