Keystones — Cornerstone
Five GCSE retrieval questions · 8 April 2015 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄5 + 5⁄7
Answer: 32⁄35 -
2. Algebra Two-step equations
Solve: 5x - 13 = 42
Answer: x = 11 -
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 91 in the ratio 3:4
Answer: 39 and 52 -
5. Statistics Mean
Find the mean of: 3, 5, 22
Answer: 10