Keystones — Lintel

Five GCSE retrieval questions · 17 November 2024 · mathsvault.uk/keystones

1. Number

Simplify: x⁵ × x³

Answer: x⁸
2. Algebra

Solve: 7x = 35

Answer: x = 5
3. Geometry

Calculate the area of a right triangle with perpendicular sides 8cm and 14cm

Answer: 56cm²
4. Ratio

Find 78% of 224

Answer: 174.72
5. Statistics

Find the range of: 22, 24, 6, -11, 8

Answer: 35

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