Keystones — Cornerstone
Five GCSE retrieval questions · 10 June 2021 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 3⁄4 + 5⁄6
Answer: 19⁄12 -
2. Algebra Two-step equations
Solve: 3x - 8 = 7
Answer: x = 5 -
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 90 in the ratio 3:2
Answer: 54 and 36 -
5. Statistics Mean
Find the mean of: 10, 7, 3, 10
Answer: 7.5