Keystones — Cornerstone
Five GCSE retrieval questions · 24 April 2020 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄6 + 2⁄3
Answer: 5⁄6 -
2. Algebra Two-step equations
Solve: 6x - 18 = 36
Answer: x = 9 -
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 30 in the ratio 3:2
Answer: 18 and 12 -
5. Statistics Mean
Find the mean of: 9, 9, 12, 3, 8
Answer: 8.2