Keystones — Cornerstone
Five GCSE retrieval questions · 16 June 2010 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄3 + 4⁄6
Answer: 1⁄1 -
2. Algebra Two-step equations
Solve: 3x - 5 = 7
Answer: x = 4 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 3cm and b = 8cm. Give your answer to 2 decimal places
Answer: 8.54cm -
4. Ratio Sharing in a ratio
Share 35 in the ratio 3:4
Answer: 15 and 20 -
5. Statistics Mean
Find the mean of: 9, 8, 8, 11
Answer: 9