Keystones — Lintel
Five GCSE retrieval questions · 9 May 2021 · mathsvault.uk/keystones
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1. Number
What is the missing number: 66 + ? = 148
Answer: 82 -
2. Algebra
Solve: 7x = 35
Answer: x = 5 -
3. Geometry
Calculate the distance between (2, 5) and (5, 9)
Answer: 5 -
4. Ratio
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics
Calculate the mean of: 20, 20, 30, 48, 32, 30, 42, 47
Answer: 33.6