Keystones — Capstone
Five GCSE retrieval questions · 6 November 2023 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 99. What are the numbers?
Answer: 32, 33, and 34 -
2. Algebra
Complete the square: x² + 3.2x
Answer: (x + 1.6)² - 2.56 -
3. Geometry
Adjacent = 30cm, hypotenuse = 37cm. Find the angle
Answer: 35.8° -
4. Ratio
Calculate 15.7% of 714
Answer: 112.1 -
5. Statistics
A spinner has 2 red, 6 blue and 2 green sections. Probability of landing on red?
Answer: 1⁄5