Keystones — Lintel
Five GCSE retrieval questions · 17 May 2025 · mathsvault.uk/keystones
-
1. Number
Calculate: 993 + 691
Answer: 1684 -
2. Algebra
Factorise fully: 9x² + 15x
Answer: 3x(3x + 5) -
3. Geometry
Opposite = 13cm, adjacent = 19cm. Calculate the angle
Answer: 34.4° -
4. Ratio
Calculate 36.2% of 533
Answer: 192.95 -
5. Statistics
A bag has 5 red and 4 blue balls. What is the probability of picking a red ball?
Answer: 5⁄9