Keystones — Cornerstone

Five GCSE retrieval questions · 13 July 2022 · mathsvault.uk/keystones

1. Number

Add: ²⁄₈ + ⁴⁄₇

Answer: ²³⁄₂₈
2. Algebra

Expand: 4(x + 6)

Answer: 4x + 24
3. Geometry

Opposite = 12cm, hypotenuse = 17cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Find 81% of 486

Answer: 393.66
5. Statistics

Calculate the mean of: 29, 33, 11, 17, 47, 19, 46

Answer: 28.9

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