Keystones — Lintel
Five GCSE retrieval questions · 7 July 2022 · mathsvault.uk/keystones
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1. Number
What is the missing number: 87 + ? = 158
Answer: 71 -
2. Algebra
Solve: 5x = 50
Answer: x = 10 -
3. Geometry
Adjacent = 27cm, hypotenuse = 36cm. Find the angle
Answer: 41.4° -
4. Ratio
Simplify: 8:12:8
Answer: 2:3:2 -
5. Statistics
A bag has 6 red and 4 blue balls. What is the probability of picking a red ball?
Answer: 3⁄5