Keystones — Cornerstone
Five GCSE retrieval questions · 10 June 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄3 + 5⁄6
Answer: 3⁄2 -
2. Algebra Two-step equations
Solve: 7x - 9 = 89
Answer: x = 14 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 6cm and 8cm
Answer: 10cm -
4. Ratio Sharing in a ratio
Divide 112 in the ratio 4:1:2
Answer: 64, 16 and 32 -
5. Statistics Mean
Find the mean of: 10, 11, 6, 9
Answer: 9