Keystones — Cornerstone
Five GCSE retrieval questions · 27 August 2017 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄6 + 1⁄3
Answer: 2⁄3 -
2. Algebra Two-step equations
Solve: 5x - 11 = 49
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 15cm and 20cm
Answer: 25cm -
4. Ratio Sharing in a ratio
Share 18 in the ratio 1:2
Answer: 6 and 12 -
5. Statistics Mean
Find the mean of: 5, 4, 8, 19
Answer: 9