Keystones — Cornerstone
Five GCSE retrieval questions · 3 February 2015 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄6 + 2⁄7
Answer: 19⁄42 -
2. Algebra Two-step equations
Solve: 5x - 8 = 57
Answer: x = 13 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 7cm and b = 15cm. Give your answer to 2 decimal places
Answer: 16.55cm -
4. Ratio Sharing in a ratio
Share 60 in the ratio 1:4
Answer: 12 and 48 -
5. Statistics Mean
Find the mean of: 4, 17, 18
Answer: 13