Keystones — Cornerstone
Five GCSE retrieval questions · 12 May 2011 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄6 + 2⁄3
Answer: 5⁄6 -
2. Algebra Two-step equations
Solve: 6x - 20 = 52
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 3cm and b = 14cm. Give your answer to 2 decimal places
Answer: 14.32cm -
4. Ratio Sharing in a ratio
Share 56 in the ratio 4:3
Answer: 32 and 24 -
5. Statistics Mean
Calculate the mean of: 24, 33, 20, 36, 19, 50. Give your answer to 2 decimal places
Answer: 30.33