Keystones — Cornerstone
Five GCSE retrieval questions · 6 July 2011 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 3⁄8 + 5⁄6
Answer: 29⁄24 -
2. Algebra Two-step equations
Solve: 3x - 10 = 23
Answer: x = 11 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 8cm and b = 10cm. Give your answer to 2 decimal places
Answer: 12.81cm -
4. Ratio Sharing in a ratio
Share 25 in the ratio 4:1
Answer: 20 and 5 -
5. Statistics Mean
Find the mean of: 10, 6, 14
Answer: 10