Keystones — Lintel
Five GCSE retrieval questions · 30 May 2022 · mathsvault.uk/keystones
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1. Number
Calculate: 311 + 612
Answer: 311 + 612 = 923 -
2. Algebra
For y = x³ + 9, calculate y when x = 4
Answer: y = 73 -
3. Geometry
Opposite = 8cm, adjacent = 9cm. Calculate the angle
Answer: 41.6° -
4. Ratio
Simplify: 18:9:18
Answer: 2:1:2 -
5. Statistics
A bag has 3 red and 3 blue balls. What is the probability of picking a red ball?
Answer: 1⁄2