Keystones — Capstone
Five GCSE retrieval questions · 12 February 2026 · mathsvault.uk/keystones
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1. Number Multiplying in standard form
Multiply: 8.4 × 106 × 4.9 × 103
Answer: 4.12 × 1010 -
2. Algebra Inequalities with unknowns on both sides
Solve: 3x + 6 ≤ x - 4
Answer: x ≤ 5 -
3. Geometry Area using Pythagoras
Calculate the area of a right triangle with perpendicular sides 10cm and 15cm
Answer: 75cm² -
4. Ratio Ratio given the difference
In ratio 9:2, the difference between shares is 259. What is the total?
Answer: 407 -
5. Statistics Mode
Find the mode of: 13, 31, 59, 79, 49
Answer: No mode