Keystones — Lintel
Five GCSE retrieval questions · 2 August 2023 · mathsvault.uk/keystones
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1. Number
What is the missing number: 48 + ? = 186
Answer: 138 -
2. Algebra
Find the next term: 1, 3, 7, 13, ...
Answer: 21 -
3. Geometry
Find c if a = 14cm and b = 14cm in a right triangle
Answer: 19.8cm -
4. Ratio
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics
A bag has 6 red and 6 blue balls. What is the probability of picking a red ball?
Answer: 1⁄2