Keystones — Cornerstone

Five GCSE retrieval questions · 5 February 2024 · mathsvault.uk/keystones

1. Number

Simplify: x⁷ × x⁶

Answer: x¹³
2. Algebra

What is the next term? 2, 6, 18, 54, ...

Answer: 162
3. Geometry

Opposite = 15cm, hypotenuse = 21.2cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Simplify: 15:18:18

Answer: 5:6:6
5. Statistics

Find the range of: 16, 26, 29, 6, 12

Answer: 23

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