Keystones — Capstone
Five GCSE retrieval questions · 2 July 2021 · 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 + 3.8x
Answer: (x + 1.9)² - 3.61 -
3. Geometry
Adjacent = 24cm, hypotenuse = 38cm. Find the angle
Answer: 50.8° -
4. Ratio
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics
A spinner has 6 red, 5 blue and 4 green sections. Probability of landing on red?
Answer: 2⁄5