Keystones — Cornerstone
Five GCSE retrieval questions · 27 November 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄3 + 4⁄6
Answer: 4⁄3 -
2. Algebra Two-step equations
Solve: 6x - 5 = 31
Answer: x = 6 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 11cm and b = 5cm. Give your answer to 2 decimal places
Answer: 12.08cm -
4. Ratio Sharing in a ratio
Share 30 in the ratio 1:4
Answer: 6 and 24 -
5. Statistics Mean
Find the mean of: 13, 3, 2
Answer: 6