Keystones — Cornerstone
Five GCSE retrieval questions · 1 November 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄3 + 1⁄4
Answer: 11⁄12 -
2. Algebra Two-step equations
Solve: 2x + 15 = 39
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 8cm and 15cm
Answer: 17cm -
4. Ratio Sharing in a ratio
Share 57 in the ratio 2:1
Answer: 38 and 19 -
5. Statistics Mean
Find the mean of: 16, 11, 6
Answer: 11