Keystones — Bedrock

Five GCSE retrieval questions · 11 August 2022 · mathsvault.uk/keystones

1. Number

Simplify: 5⁴ × 5⁵

Answer: 5⁹
2. Algebra

Solve: x + 2 = 10

Answer: x = 8
3. Geometry

Opposite = 6cm, hypotenuse = 6.9cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Calculate 10% of 191

Answer: 19.1
5. Statistics

Find the mean of: 17, 13, 10

Answer: 13.333333333333

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