Keystones — Capstone
Five GCSE retrieval questions · 25 December 2022 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 108. What are the numbers?
Answer: 35, 36, and 37 -
2. Algebra
Complete the square: x² + 2.6x
Answer: (x + 1.3)² - 1.69 -
3. Geometry
Adjacent = 24cm, hypotenuse = 42cm. Find the angle
Answer: 55.2° -
4. Ratio
Calculate 50% of 553
Answer: 276.5 -
5. Statistics
A spinner has 6 red, 2 blue and 6 green sections. Probability of landing on red?
Answer: 3⁄7