Keystones — Cornerstone
Five GCSE retrieval questions · 22 July 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄3 + 4⁄6
Answer: 1⁄1 -
2. Algebra Two-step equations
Solve: 6x + 14 = 68
Answer: x = 9 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 8cm and 15cm
Answer: 17cm -
4. Ratio Sharing in a ratio
Divide 264 in the ratio 4:3:4
Answer: 96, 72 and 96 -
5. Statistics Mean
Find the mean of: 19, 2, 11, 20
Answer: 13