Keystones — Cornerstone
Five GCSE retrieval questions · 22 June 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄7 + 1⁄5
Answer: 17⁄35 -
2. Algebra Two-step equations
Solve: 2x - 10 = 4
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 9cm and 40cm
Answer: 41cm -
4. Ratio Sharing in a ratio
Share 108 in the ratio 2:1
Answer: 72 and 36 -
5. Statistics Mean
Find the mean of: 3, 20, 3, 13, 11
Answer: 10