Keystones — Cornerstone
Five GCSE retrieval questions · 5 September 2018 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄6 + 2⁄7
Answer: 19⁄42 -
2. Algebra Two-step equations
Solve: 3x - 5 = 7
Answer: x = 4 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 7cm and b = 5cm
Answer: 8.6cm -
4. Ratio Sharing in a ratio
Divide 189 in the ratio 2:2:3
Answer: 54, 54 and 81 -
5. Statistics Mean
Find the mean of: 19, 12, 16
Answer: 15.666666666667