Keystones — Cornerstone
Five GCSE retrieval questions · 27 June 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 767 + 138
Answer: 767 + 138 = 905 -
2. Algebra
Solve: x + 4 = 8
Answer: x = 4 -
3. Geometry
Calculate the distance between (9, 6) and (12, 10)
Answer: 5 -
4. Ratio
Calculate 50% of 117
Answer: 58.5 -
5. Statistics
A bag has 7 red and 7 blue balls. What is the probability of picking a red ball?
Answer: 1⁄2