Keystones — Cornerstone
Five GCSE retrieval questions · 30 October 2022 · mathsvault.uk/keystones
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1. Number
What is the missing number: 72 + ? = 194
Answer: 122 -
2. Algebra
Solve: 3x = 15
Answer: x = 5 -
3. Geometry
Find the hypotenuse of a right triangle with sides 8cm and 15cm
Answer: 17cm -
4. Ratio
Simplify: 18:15:15
Answer: 6:5:5 -
5. Statistics
Calculate the range of: 107, 92, 30, 30, 80, 97
Answer: 77