Keystones — Cornerstone
Five GCSE retrieval questions · 26 January 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄4 + 2⁄6
Answer: 7⁄12 -
2. Algebra Two-step equations
Solve: 5x + 14 = 64
Answer: x = 10 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 6cm and 8cm
Answer: 10cm -
4. Ratio Sharing in a ratio
Share 60 in the ratio 1:2
Answer: 20 and 40 -
5. Statistics Mean
Calculate the mean of: 44, 27, 6, 9, 18, 39, 48, 31
Answer: 27.75