Keystones — Lintel
Five GCSE retrieval questions · 26 January 2023 · mathsvault.uk/keystones
-
1. Number Converting to standard form
0.00083
Answer: 8.3 × 10^-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 14
Answer: (x + 7)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 29cm, angle = 25°. Find adjacent side
Answer: 26.3cm -
4. Ratio Mixed ratio problems
£144.00 is shared between A and B in the ratio 2:1. How much does A receive?
Answer: £96.00 -
5. Statistics Mean
The mean of 6 numbers is 33. If 5 of them are 38, 26, 38, 32, 45, what is the missing number?
Answer: 19