Keystones — Lintel
Five GCSE retrieval questions · 21 November 2022 · mathsvault.uk/keystones
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1. Number
What is the missing number: 40 + ? = 149
Answer: 109 -
2. Algebra
Find the next term: 1, 4, 10, 19, ...
Answer: 31 -
3. Geometry
Adjacent = 27cm, hypotenuse = 32cm. Find the angle
Answer: 32.5° -
4. Ratio
Simplify: 8:20:12
Answer: 2:5:3 -
5. Statistics
A bag has 5 red and 5 blue balls. What is the probability of picking a red ball?
Answer: 1⁄2