Keystones Bedrock — 8 August 2021

Keystones — Bedrock

Five GCSE retrieval questions · 8 August 2021 · mathsvault.uk/keystones

1. Number

700000

Answer: 7 × 10⁵
2. Algebra

Simplify: 6x + 7x

Answer: 13x
3. Geometry

Opposite = 9cm, hypotenuse = 18cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Calculate 25% of 23

Answer: 5.75
5. Statistics

Find the mean of: 19, 12, 2, 10, 13

Answer: 11.2

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