Keystones — Cornerstone
Five GCSE retrieval questions · 30 May 2015 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄3 + 4⁄8
Answer: 5⁄6 -
2. Algebra Two-step equations
Solve: 6x - 16 = 38
Answer: x = 9 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 12cm and 16cm
Answer: 20cm -
4. Ratio Sharing in a ratio
Divide 114 in the ratio 1:3:2
Answer: 19, 57 and 38 -
5. Statistics Mean
Find the mean of: 19, 6, 10, 9, 16
Answer: 12