Keystones — Cornerstone
Five GCSE retrieval questions · 10 April 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 3⁄8 + 1⁄7
Answer: 29⁄56 -
2. Algebra Two-step equations
Solve: 5x + 4 = 19
Answer: x = 3 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 3cm and b = 10cm. Give your answer to 2 decimal places
Answer: 10.44cm -
4. Ratio Sharing in a ratio
Divide 243 in the ratio 2:4:3
Answer: 54, 108 and 81 -
5. Statistics Mean
Find the mean of: 9, 1, 17
Answer: 9