Keystones — Cornerstone
Five GCSE retrieval questions · 10 February 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 3⁄6 + 2⁄6
Answer: 5⁄6 -
2. Algebra Two-step equations
Solve: 3x + 5 = 41
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 3cm and b = 10cm. Give your answer to 2 decimal places
Answer: 10.44cm -
4. Ratio Sharing in a ratio
Share 55 in the ratio 3:2
Answer: 33 and 22 -
5. Statistics Mean
Calculate the mean of: 46, 40, 11, 36, 49, 11, 38
Answer: 33