Keystones — Cornerstone
Five GCSE retrieval questions · 25 December 2023 · mathsvault.uk/keystones
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1. Number
What is 6.1 + 2.22 + 0.83?
Answer: 6.1 + 2.22 + 0.83 = 9.15 -
2. Algebra
Expand: 8(x + 6)
Answer: 8x + 48 -
3. Geometry
Calculate the hypotenuse when a = 6cm and b = 9cm
Answer: 10.82cm -
4. Ratio
Simplify: 9:15:12
Answer: 3:5:4 -
5. Statistics
Calculate the mean of: 7, 43, 34, 43, 37, 11, 37, 30
Answer: 30.3