Keystones — Cornerstone
Five GCSE retrieval questions · 4 May 2022 · mathsvault.uk/keystones
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1. Number
Calculate: 20 + 83
Answer: 20 + 83 = 103 -
2. Algebra
Solve: x + 9 = 24
Answer: x = 15 -
3. Geometry
Calculate the perimeter of a right triangle with sides 6cm and 8cm
Answer: 24cm -
4. Ratio
Simplify: 6:6:10
Answer: 3:3:5 -
5. Statistics
Find the mean of: 7, 9, 10
Answer: 8.6666666666667