Keystones — Cornerstone
Five GCSE retrieval questions · 18 September 2013 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 4⁄6 + 1⁄6
Answer: 5⁄6 -
2. Algebra Two-step equations
Solve: 3x + 8 = 41
Answer: x = 11 -
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
Divide 152 in the ratio 1:4:3
Answer: 19, 76 and 57 -
5. Statistics Mean
Find the mean of: 3, 9, 24
Answer: 12