Keystones — Lintel
Five GCSE retrieval questions · 24 November 2023 · mathsvault.uk/keystones
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1. Number
0.028
Answer: 2.8 × 10^-2 -
2. Algebra
Solve: 2x = 28
Answer: x = 14 -
3. Geometry
Find c if a = 11cm and b = 19cm in a right triangle
Answer: 22cm -
4. Ratio
Calculate 24.1% of 709
Answer: 170.87 -
5. Statistics
Calculate the mean of: 18, 28, 28, 29, 35, 50
Answer: 31.3