Keystones — Cornerstone

Five GCSE retrieval questions · 6 September 2024 · mathsvault.uk/keystones

1. Number

Calculate: ⁴⁄₇ + ¹⁄₇

Answer: ⁵⁄₇
2. Algebra

Factorise: 8x + 28

Answer: 4(2x + 7)
3. Geometry

Opposite = 10cm, hypotenuse = 14.cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Simplify the ratio 12:16

Answer: 3:4
5. Statistics

Calculate the mean of: 48, 23, 38, 32, 16, 31, 32, 15

Answer: 29.4

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