Keystones — Cornerstone
Five GCSE retrieval questions · 1 June 2011 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄3 + 6⁄7
Answer: 25⁄21 -
2. Algebra Two-step equations
Solve: 2x + 3 = 11
Answer: x = 4 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 4cm. Give your answer to 2 decimal places
Answer: 6.4cm -
4. Ratio Sharing in a ratio
Share 54 in the ratio 2:1
Answer: 36 and 18 -
5. Statistics Mean
Calculate the mean of: 44, 17, 41, 11, 10, 42
Answer: 27.5