Keystones — Cornerstone
Five GCSE retrieval questions · 19 September 2011 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄8 + 1⁄5
Answer: 13⁄40 -
2. Algebra Two-step equations
Solve: 3x - 19 = 2
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 7cm and b = 4cm. Give your answer to 2 decimal places
Answer: 8.06cm -
4. Ratio Sharing in a ratio
Share 25 in the ratio 3:2
Answer: 15 and 10 -
5. Statistics Mean
Find the mean of: 4, 16, 7
Answer: 9