Keystones — Cornerstone
Five GCSE retrieval questions · 29 September 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄5 + 1⁄3
Answer: 8⁄15 -
2. Algebra Two-step equations
Solve: 5x - 12 = 23
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 12cm and 16cm
Answer: 20cm -
4. Ratio Sharing in a ratio
Share 105 in the ratio 4:3
Answer: 60 and 45 -
5. Statistics Mean
Find the mean of: 17, 18, 4
Answer: 13