Keystones — Cornerstone
Five GCSE retrieval questions · 25 November 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 6⁄7 + 1⁄4
Answer: 31⁄28 -
2. Algebra Two-step equations
Solve: 3x + 6 = 30
Answer: x = 8 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 6cm and b = 6cm. Give your answer to 2 decimal places
Answer: 8.49cm -
4. Ratio Sharing in a ratio
Divide 208 in the ratio 4:3:1
Answer: 104, 78 and 26 -
5. Statistics Mean
Find the mean of: 20, 4, 4, 12
Answer: 10