Keystones — Bedrock

Five GCSE retrieval questions · 12 July 2022 · mathsvault.uk/keystones

1. Number

Simplify: 4⁵ × 4⁵

Answer: 4¹⁰
2. Algebra

Factorise: 15x + 12

Answer: 3(5x + 4)
3. Geometry

Opposite = 11cm, hypotenuse = 15.6cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Calculate 10% of 94

Answer: 9.4
5. Statistics

Find the mean of: 2, 7, 14

Answer: 7.6666666666667

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