Keystones — Lintel

Five GCSE retrieval questions · 26 May 2022 · mathsvault.uk/keystones

1. Number

Simplify: x⁶ × x⁵

Answer: x¹¹
2. Algebra

Factorise: 6x² + 2x

Answer: 2x(3x + 1)
3. Geometry

Find the distance between (-7, 0) and (4, 8)

Answer: 13.6
4. Ratio

Simplify: 10:8:10

Answer: 5:4:5
5. Statistics

Calculate the mean of: 20, 32, 28, 23, 8, 23, 34, 37

Answer: 25.6

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