Keystones — Cornerstone
Five GCSE retrieval questions · 6 August 2017 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 4⁄5 + 5⁄7
Answer: 53⁄35 -
2. Algebra Two-step equations
Solve: 7x + 6 = 90
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 7cm and b = 14cm. Give your answer to 2 decimal places
Answer: 15.65cm -
4. Ratio Sharing in a ratio
Share 75 in the ratio 3:2
Answer: 45 and 30 -
5. Statistics Mean
Find the mean of: 17, 13, 14, 16
Answer: 15