Keystones — Cornerstone
Five GCSE retrieval questions · 1 February 2012 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄6 + 2⁄3
Answer: 1⁄1 -
2. Algebra Two-step equations
Solve: 5x - 14 = 36
Answer: x = 10 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 7cm and b = 12cm. Give your answer to 2 decimal places
Answer: 13.89cm -
4. Ratio Sharing in a ratio
Share 42 in the ratio 2:1
Answer: 28 and 14 -
5. Statistics Mean
Calculate the mean of: 34, 17, 19, 10, 48, 6. Give your answer to 2 decimal places
Answer: 22.33