Keystones — Lintel
Five GCSE retrieval questions · 26 April 2021 · mathsvault.uk/keystones
-
1. Number Converting to standard form
760000
Answer: 7.6 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 12
Answer: (x + 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 40cm, angle = 39°. Find adjacent side
Answer: 31.cm -
4. Ratio Mixed ratio problems
Simplify: 12:24:12
Answer: 1:2:1 -
5. Statistics Mean
The mean of 6 numbers is 21. If 5 of them are 31, 29, 48, 32, 18, what is the missing number?
Answer: -32