Keystones — Cornerstone
Five GCSE retrieval questions · 30 December 2017 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄6 + 5⁄7
Answer: 37⁄42 -
2. Algebra Two-step equations
Solve: 2x + 3 = 11
Answer: x = 4 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 7cm and 24cm
Answer: 25cm -
4. Ratio Sharing in a ratio
Share 63 in the ratio 4:3
Answer: 36 and 27 -
5. Statistics Mean
Find the mean of: 14, 6, 4, 20
Answer: 11