Keystones Lintel — 11 December 2021

Keystones — Lintel

Five GCSE retrieval questions · 11 December 2021 · mathsvault.uk/keystones

1. Number

Simplify: y² × y² × y²

Answer: y⁶
2. Algebra

Factorise: 6x² + 2x

Answer: 2x(3x + 1)
3. Geometry

Adjacent = 15cm, hypotenuse = 22cm. Find the angle

Answer: 47°
4. Ratio

Simplify the ratio 5m:500cm

Answer: 1:100
5. Statistics

Calculate the mean of: 20, 16, 50, 39, 39, 49, 50

Answer: 37.6

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