Keystones — Capstone
Five GCSE retrieval questions · 22 May 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 994 + 768
Answer: 1762 -
2. Algebra
Simplify: 12x²y³ ÷ 4xy²
Answer: 3xy -
3. Geometry
Find c if a = 13cm and b = 22cm in a right triangle
Answer: 25.6cm -
4. Ratio
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics
The mean of 5 numbers is 38. If 4 of them are 36, 17, 34, 24, what is the missing number?
Answer: 79