Keystones — Lintel
Five GCSE retrieval questions · 27 February 2023 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 102. What are the numbers?
Answer: 33, 34, and 35 -
2. Algebra
Expand: 4(3x + 3)
Answer: 12x + 12 -
3. Geometry
Calculate the area of a right triangle with perpendicular sides 6cm and 7cm
Answer: 21cm² -
4. Ratio
Find 65% of 100
Answer: 65 -
5. Statistics
Calculate the mean of: 27, 13, 8, 8, 42, 45, 22, 46
Answer: 26.4