Keystones — Cornerstone
Five GCSE retrieval questions · 1 June 2014 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 6⁄8 + 5⁄6
Answer: 19⁄12 -
2. Algebra Two-step equations
Solve: 7x - 14 = 91
Answer: x = 15 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 20cm and 21cm
Answer: 29cm -
4. Ratio Sharing in a ratio
Divide 207 in the ratio 4:2:3
Answer: 92, 46 and 69 -
5. Statistics Mean
Find the mean of: 16, 10, 16
Answer: 14