Keystones — Cornerstone
Five GCSE retrieval questions · 28 May 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄5 + 3⁄6
Answer: 7⁄10 -
2. Algebra Two-step equations
Solve: 7x + 12 = 40
Answer: x = 4 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 5cm. Give your answer to 2 decimal places
Answer: 7.07cm -
4. Ratio Sharing in a ratio
Share 18 in the ratio 2:1
Answer: 12 and 6 -
5. Statistics Mean
Find the mean of: 19, 20, 5, 3, 13
Answer: 12