Keystones — Cornerstone
Five GCSE retrieval questions · 1 October 2013 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 3⁄4 + 1⁄6
Answer: 11⁄12 -
2. Algebra Two-step equations
Solve: 7x + 13 = 41
Answer: x = 4 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 3cm and b = 13cm. Give your answer to 2 decimal places
Answer: 13.34cm -
4. Ratio Sharing in a ratio
Share 40 in the ratio 1:4
Answer: 8 and 32 -
5. Statistics Mean
Calculate the mean of: 9, 33, 11, 16, 41, 34, 42. Give your answer to 2 decimal places
Answer: 26.57