Keystones — Lintel
Five GCSE retrieval questions · 29 June 2023 · mathsvault.uk/keystones
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1. Number
The sum of three consecutive numbers is 123. What are the numbers?
Answer: 40, 41, and 42 -
2. Algebra
Solve: 9x = 63
Answer: x = 7 -
3. Geometry
Opposite = 12cm, adjacent = 20cm. Calculate the angle
Answer: 31° -
4. Ratio
Calculate 31.6% of 992
Answer: 313.47 -
5. Statistics
A bag has 4 red and 6 blue balls. What is the probability of picking a red ball?
Answer: 2⁄5