Keystones — Capstone
Five GCSE retrieval questions · 11 February 2026 · mathsvault.uk/keystones
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1. Number Multiplying in standard form
Multiply: 6.1 × 106 × 2.8 × 105
Answer: 1.71 × 1012 -
2. Algebra Inequalities with unknowns on both sides
Solve: 6x + 12 ≤ 3x - 3
Answer: x ≤ 5 -
3. Geometry Area using Pythagoras
A right triangle has hypotenuse 13cm and one side 5cm. Find its area
Answer: 30cm² -
4. Ratio Ratio given the difference
In ratio 5:3, the difference between shares is 58. What is the total?
Answer: 232 -
5. Statistics Mode
Find the mode of: 72, 19, 58, 49, 33
Answer: No mode