Keystones — Cornerstone
Five GCSE retrieval questions · 21 February 2013 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 3⁄5 + 3⁄7
Answer: 36⁄35 -
2. Algebra Two-step equations
Solve: 4x - 19 = 9
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 3cm and b = 7cm. Give your answer to 2 decimal places
Answer: 7.62cm -
4. Ratio Sharing in a ratio
Share 64 in the ratio 1:3
Answer: 16 and 48 -
5. Statistics Mean
Find the mean of: 4, 16, 16
Answer: 12