Keystones — Cornerstone
Five GCSE retrieval questions · 26 January 2022 · mathsvault.uk/keystones
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1. Number
Calculate: 95 + 66
Answer: 95 + 66 = 161 -
2. Algebra
Simplify: 9x + 6x
Answer: 15x -
3. Geometry
Opposite = 10cm, hypotenuse = 11.5cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Calculate 10% of 128
Answer: 12.8 -
5. Statistics
A bag has 3 red and 6 blue balls. What is the probability of picking a red ball?
Answer: 1⁄3