Keystones — Lintel
Five GCSE retrieval questions · 26 August 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 417 + 438
Answer: 417 + 438 = 855 -
2. Algebra
Solve: 6x + 12 = 5x - 10
Answer: x = 22 -
3. Geometry
Opposite = 17cm, adjacent = 18cm. Calculate the angle
Answer: 43.4° -
4. Ratio
Simplify: 6:12:15
Answer: 2:4:5 -
5. Statistics
A bag has 5 red and 4 blue balls. What is the probability of picking a red ball?
Answer: 5⁄9