Keystones — Capstone
Five GCSE retrieval questions · 3 April 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 993 + 521
Answer: 1514 -
2. Algebra
Expand: 2(4x - 9)
Answer: 8x - 18 -
3. Geometry
Find c if a = 8cm and b = 22cm in a right triangle
Answer: 23.4cm -
4. Ratio
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics
The mean of 4 numbers is 30. If 3 of them are 30, 30, 32, what is the missing number?
Answer: 28