Keystones — Lintel
Five GCSE retrieval questions · 20 July 2021 · mathsvault.uk/keystones
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1. Number
What is 3.7 + 2.86 + 0.31?
Answer: 3.7 + 2.86 + 0.31 = 6.87 -
2. Algebra
Factorise: 2x² + 4x
Answer: 2x(x + 2) -
3. Geometry
Opposite = 14cm, adjacent = 19cm. Calculate the angle
Answer: 36.4° -
4. Ratio
Simplify: 6:12:10
Answer: 3:6:5 -
5. Statistics
A spinner has 6 red, 4 blue and 6 green sections. Probability of landing on red?
Answer: 3⁄8