Keystones — Capstone
Five GCSE retrieval questions · 10 December 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 996 + 585
Answer: 1581 -
2. Algebra
Simplify: 8x - 3x + 10y - 4y
Answer: 5x + 6y -
3. Geometry
Find c if a = 20cm and b = 21cm in a right triangle
Answer: 29cm -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 33. If 3 of them are 45, 21, 26, what is the missing number?
Answer: 40