Keystones — Cornerstone
Five GCSE retrieval questions · 29 December 2011 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 7⁄12 + 4⁄12
Answer: 11⁄12 -
2. Algebra Two-step equations
Solve: 5x - 8 = 22
Answer: x = 6 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 4cm and b = 5cm. Give your answer to 2 decimal places
Answer: 6.4cm -
4. Ratio Sharing in a ratio
Share 51 in the ratio 1:2
Answer: 17 and 34 -
5. Statistics Mean
Find the mean of: 3, 20, 4
Answer: 9