Keystones — Cornerstone
Five GCSE retrieval questions · 3 May 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄6 + 1⁄4
Answer: 7⁄12 -
2. Algebra Two-step equations
Solve: 6x + 11 = 47
Answer: x = 6 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 12cm and b = 6cm. Give your answer to 2 decimal places
Answer: 13.42cm -
4. Ratio Sharing in a ratio
Share 75 in the ratio 2:3
Answer: 30 and 45 -
5. Statistics Mean
Calculate the mean of: 41, 49, 47, 40, 43, 47
Answer: 44.5