Keystones — Cornerstone
Five GCSE retrieval questions · 6 September 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 80 + 53
Answer: 80 + 53 = 133 -
2. Algebra
Solve: 6x = 60
Answer: x = 10 -
3. Geometry
Calculate the perimeter of a right triangle with sides 8cm and 8cm
Answer: 27.3cm -
4. Ratio
Simplify: 15:12:15
Answer: 5:4:5 -
5. Statistics
Find the mean of: 15, 17, 4, 11, 7
Answer: 10.8