Keystones — Lintel
Five GCSE retrieval questions · 26 September 2023 · mathsvault.uk/keystones
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1. Number
What is the missing number: 32 + ? = 198
Answer: 166 -
2. Algebra
Factorise: 7x² + 7x
Answer: 7x(x + 1) -
3. Geometry
Opposite = 12cm, adjacent = 14cm. Calculate the angle
Answer: 40.6° -
4. Ratio
Calculate 11.5% of 749
Answer: 86.14 -
5. Statistics
A bag has 5 red and 5 blue balls. What is the probability of picking a red ball?
Answer: 1⁄2