Keystones — Cornerstone
Five GCSE retrieval questions · 31 August 2020 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 4⁄5 + 3⁄4
Answer: 31⁄20 -
2. Algebra Two-step equations
Solve: 7x - 15 = 62
Answer: x = 11 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 10cm and b = 4cm
Answer: 10.77cm -
4. Ratio Sharing in a ratio
Divide 104 in the ratio 3:3:2
Answer: 39, 39 and 26 -
5. Statistics Mean
Find the mean of: 6, 14, 17, 7
Answer: 11