Keystones — Bedrock

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

1. Number

Calculate: 47 + 21

Answer: 47 + 21 = 68
2. Algebra

Solve: x + 12 = 18

Answer: x = 6
3. Geometry

Opposite = 8cm, hypotenuse = 16cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Simplify the ratio 30:15

Answer: 2:1
5. Statistics

What is the probability of rolling a 4 on a fair die?

Answer: ¹⁄₆

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