Keystones — Lintel
Five GCSE retrieval questions · 22 March 2022 · mathsvault.uk/keystones
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1. Number
What is the missing number: 73 + ? = 164
Answer: 91 -
2. Algebra
Solve: 5x = 45
Answer: x = 9 -
3. Geometry
Opposite = 14cm, adjacent = 20cm. Calculate the angle
Answer: 35° -
4. Ratio
Simplify: 12:20:20
Answer: 3:5:5 -
5. Statistics
A bag has 8 red and 3 blue balls. What is the probability of picking a red ball?
Answer: 8⁄11