Keystones — Cornerstone
Five GCSE retrieval questions · 4 June 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄3 + 2⁄8
Answer: 7⁄12 -
2. Algebra Two-step equations
Solve: 5x + 6 = 21
Answer: x = 3 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 7cm. Give your answer to 2 decimal places
Answer: 8.6cm -
4. Ratio Sharing in a ratio
Share 105 in the ratio 4:3
Answer: 60 and 45 -
5. Statistics Mean
Find the mean of: 13, 10, 8, 1
Answer: 8