Keystones Lintel — 20 October 2021

Keystones — Lintel

Five GCSE retrieval questions · 20 October 2021 · mathsvault.uk/keystones

1. Number

90000

Answer: 9 × 10⁴
2. Algebra

Solve: 3x + 11 = 2x - 7

Answer: x = 18
3. Geometry

Adjacent = 30cm, hypotenuse = 50cm. Find the angle

Answer: 53.1°
4. Ratio

Find 76% of 340

Answer: 258.4
5. Statistics

Calculate the mean of: 24, 39, 38, 29, 42, 28, 26, 45

Answer: 33.9

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