Keystones — Cornerstone
Five GCSE retrieval questions · 10 March 2017 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 7⁄8 + 4⁄6
Answer: 37⁄24 -
2. Algebra Two-step equations
Solve: 6x - 14 = 58
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 9cm. Give your answer to 2 decimal places
Answer: 10.3cm -
4. Ratio Sharing in a ratio
Divide 216 in the ratio 3:4:2
Answer: 72, 96 and 48 -
5. Statistics Mean
Calculate the mean of: 40, 41, 9, 7, 32, 13. Give your answer to 2 decimal places
Answer: 23.67