Keystones — Lintel
Five GCSE retrieval questions · 16 January 2022 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 105. What are the numbers?
Answer: 34, 35, and 36 -
2. Algebra
What is the next term? 8, 24, 72, 216, ...
Answer: 648 -
3. Geometry
Opposite = 19cm, adjacent = 8cm. Calculate the angle
Answer: 67.2° -
4. Ratio
Simplify: 20:8:8
Answer: 5:2:2 -
5. Statistics
A bag has 8 red and 8 blue balls. What is the probability of picking a red ball?
Answer: 1⁄2