Keystones — Cornerstone
Five GCSE retrieval questions · 27 May 2011 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄4 + 1⁄8
Answer: 5⁄8 -
2. Algebra Two-step equations
Solve: 2x - 9 = 15
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 11cm and b = 7cm. Give your answer to 2 decimal places
Answer: 13.04cm -
4. Ratio Sharing in a ratio
Share 112 in the ratio 3:4
Answer: 48 and 64 -
5. Statistics Mean
Find the mean of: 14, 18, 5, 16, 7
Answer: 12