Keystones — Cornerstone
Five GCSE retrieval questions · 16 October 2012 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄7 + 2⁄6
Answer: 10⁄21 -
2. Algebra Two-step equations
Solve: 5x - 18 = 17
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 7cm and b = 8cm. Give your answer to 2 decimal places
Answer: 10.63cm -
4. Ratio Sharing in a ratio
Share 64 in the ratio 1:3
Answer: 16 and 48 -
5. Statistics Mean
Find the mean of: 18, 20, 7
Answer: 15