Keystones — Lintel
Five GCSE retrieval questions · 19 June 2021 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 93. What are the numbers?
Answer: 30, 31, and 32 -
2. Algebra
For y = 3x³ + 7, find y when x = 3
Answer: y = 88 -
3. Geometry
Find c if a = 11cm and b = 24cm in a right triangle
Answer: 26.4cm -
4. Ratio
Calculate 50% of 752
Answer: 376 -
5. Statistics
Calculate the mean of: 5, 31, 20, 47, 21, 45
Answer: 28.2