Keystones — Cornerstone
Five GCSE retrieval questions · 9 March 2013 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 7⁄9 + 1⁄9
Answer: 8⁄9 -
2. Algebra Two-step equations
Solve: 2x + 6 = 22
Answer: x = 8 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 6cm. Give your answer to 2 decimal places
Answer: 7.81cm -
4. Ratio Sharing in a ratio
Share 54 in the ratio 1:2
Answer: 18 and 36 -
5. Statistics Mean
Find the mean of: 10, 8, 18
Answer: 12