Keystones — Cornerstone
Five GCSE retrieval questions · 15 July 2021 · mathsvault.uk/keystones
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1. Number
What is 8.9 + 8.98 + 0.93?
Answer: 8.9 + 8.98 + 0.93 = 18.81 -
2. Algebra
Solve: 4x = 20
Answer: x = 5 -
3. Geometry
Find the hypotenuse of a right triangle with sides 3cm and 4cm
Answer: 5cm -
4. Ratio
Simplify: 12:9:9
Answer: 4:3:3 -
5. Statistics
Find the mean of: 14, 6, 18
Answer: 12.666666666667