Keystones — Lintel

Five GCSE retrieval questions · 7 December 2022 · mathsvault.uk/keystones

1. Number

What is the missing number: 87 + ? = 123

Answer: 36
2. Algebra

Solve: 2x = 8

Answer: x = 4
3. Geometry

Adjacent = 19cm, hypotenuse = 29cm. Find the angle

Answer: 49.1°
4. Ratio

Find 80% of 133

Answer: 106.4
5. Statistics

A spinner has 5 red, 2 blue and 6 green sections. Probability of landing on red?

Answer: ⁵⁄₁₃

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