Keystones — Lintel
Five GCSE retrieval questions · 11 November 2024 · mathsvault.uk/keystones
-
1. Number Converting to standard form
84000000
Answer: 8.4 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 21
Answer: (x + 7)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 18cm, angle = 58°. Find opposite
Answer: 28.8cm -
4. Ratio Mixed ratio problems
£312.00 is shared between A and B in the ratio 5:3. How much does A receive?
Answer: £195.00 -
5. Statistics Mean
The mean of 4 numbers is 27. If 3 of them are 31, 48, 45, what is the missing number?
Answer: -16