Keystones — Cornerstone
Five GCSE retrieval questions · 11 September 2021 · mathsvault.uk/keystones
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1. Number
What is the missing number: 70 + ? = 188
Answer: 118 -
2. Algebra
Solve: x + 11 = 21
Answer: x = 10 -
3. Geometry
Calculate the area of a circle with diameter 16cm
Answer: 201.06cm² -
4. Ratio
Simplify: 6:8:4
Answer: 3:4:2 -
5. Statistics
Calculate the range of: 65, 68, 87, 73, 76, 44
Answer: 43