Keystones — Cornerstone
Five GCSE retrieval questions · 7 May 2010 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄8 + 1⁄5
Answer: 9⁄20 -
2. Algebra Two-step equations
Solve: 4x - 8 = 28
Answer: x = 9 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 11cm. Give your answer to 2 decimal places
Answer: 12.08cm -
4. Ratio Sharing in a ratio
Share 133 in the ratio 3:4
Answer: 57 and 76 -
5. Statistics Mean
Calculate the mean of: 41, 35, 34, 22, 30, 30, 35, 5
Answer: 29