Keystones — Capstone
Five GCSE retrieval questions · 12 April 2021 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 105. What are the numbers?
Answer: 34, 35, and 36 -
2. Algebra
Complete the square: x² + 2.8x
Answer: (x + 1.4)² - 1.96 -
3. Geometry
Adjacent = 18cm, hypotenuse = 26cm. Find the angle
Answer: 46.2° -
4. Ratio
Calculate 28% of 581
Answer: 162.68 -
5. Statistics
A spinner has 5 red, 2 blue and 4 green sections. Probability of landing on red?
Answer: 5⁄11