Keystones — Lintel
Five GCSE retrieval questions · 10 October 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 249 + 270
Answer: 249 + 270 = 519 -
2. Algebra
For y = x³ + 7, calculate y when x = 2
Answer: y = 15 -
3. Geometry
Opposite = 13cm, adjacent = 17cm. Calculate the angle
Answer: 37.4° -
4. Ratio
Find 25% of 175
Answer: 43.75 -
5. Statistics
A bag has 3 red and 7 blue balls. What is the probability of picking a red ball?
Answer: 3⁄10