Keystones — Cornerstone
Five GCSE retrieval questions · 18 March 2011 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 3⁄5 + 1⁄5
Answer: 4⁄5 -
2. Algebra Two-step equations
Solve: 6x + 6 = 54
Answer: x = 8 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 10cm and b = 6cm. Give your answer to 2 decimal places
Answer: 11.66cm -
4. Ratio Sharing in a ratio
Share 64 in the ratio 3:1
Answer: 48 and 16 -
5. Statistics Mean
Find the mean of: 14, 22, 3
Answer: 13