Keystones — Cornerstone
Five GCSE retrieval questions · 2 November 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 4⁄7 + 2⁄7
Answer: 6⁄7 -
2. Algebra Two-step equations
Solve: 5x + 3 = 63
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 6cm and b = 5cm. Give your answer to 2 decimal places
Answer: 7.81cm -
4. Ratio Sharing in a ratio
Share 35 in the ratio 2:3
Answer: 14 and 21 -
5. Statistics Mean
Find the mean of: 15, 19, 10, 8
Answer: 13