Keystones — Cornerstone
Five GCSE retrieval questions · 5 June 2012 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 3⁄5 + 5⁄7
Answer: 46⁄35 -
2. Algebra Two-step equations
Solve: 2x + 11 = 19
Answer: x = 4 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 6cm. Give your answer to 2 decimal places
Answer: 7.81cm -
4. Ratio Sharing in a ratio
Share 114 in the ratio 1:2
Answer: 38 and 76 -
5. Statistics Mean
Calculate the mean of: 45, 32, 12, 42, 36, 11, 24. Give your answer to 2 decimal places
Answer: 28.86