Keystones — Lintel
Five GCSE retrieval questions · 21 January 2023 · mathsvault.uk/keystones
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1. Number
Calculate: -7 + (-27)
Answer: -34 -
2. Algebra
Find the next term: 1, 3, 7, 13, ...
Answer: 21 -
3. Geometry
Calculate the area of a circle with diameter 18cm
Answer: 254.47cm² -
4. Ratio
Find 57% of 176
Answer: 100.32 -
5. Statistics
A bag has 7 red and 4 blue balls. What is the probability of picking a red ball?
Answer: 7⁄11