Keystones — Lintel
Five GCSE retrieval questions · 4 March 2023 · mathsvault.uk/keystones
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1. Number
0.0099
Answer: 9.9 × 10^-3 -
2. Algebra
Solve: 3x + 6 = 2x - 3
Answer: x = 9 -
3. Geometry
Find c if a = 18cm and b = 23cm in a right triangle
Answer: 29.2cm -
4. Ratio
Calculate 26.1% of 646
Answer: 168.61 -
5. Statistics
A spinner has 6 red, 4 blue and 4 green sections. Probability of landing on red?
Answer: 3⁄7