Keystones — Lintel
Five GCSE retrieval questions · 3 March 2021 · mathsvault.uk/keystones
-
1. Number Converting to standard form
68000000
Answer: 6.8 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 34cm, angle = 51°. Find adjacent side
Answer: 21.4cm -
4. Ratio Mixed ratio problems
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics Mean
The mean of 4 numbers is 38. If 3 of them are 48, 27, 33, what is the missing number?
Answer: 44