Keystones — Cornerstone
Five GCSE retrieval questions · 30 August 2013 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄3 + 2⁄6
Answer: 1⁄1 -
2. Algebra Two-step equations
Solve: 6x - 15 = 27
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 14cm. Give your answer to 2 decimal places
Answer: 14.87cm -
4. Ratio Sharing in a ratio
Divide 182 in the ratio 2:4:1
Answer: 52, 104 and 26 -
5. Statistics Mean
Find the mean of: 18, 11, 10, 9
Answer: 12