Keystones — Cornerstone
Five GCSE retrieval questions · 8 January 2013 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄7 + 4⁄8
Answer: 11⁄14 -
2. Algebra Two-step equations
Solve: 7x + 9 = 72
Answer: x = 9 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 7cm and b = 7cm. Give your answer to 2 decimal places
Answer: 9.9cm -
4. Ratio Sharing in a ratio
Share 120 in the ratio 2:1
Answer: 80 and 40 -
5. Statistics Mean
Calculate the mean of: 46, 7, 14, 9, 40, 5, 50. Give your answer to 2 decimal places
Answer: 24.43