Keystones — Cornerstone
Five GCSE retrieval questions · 29 November 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 2⁄8 + 4⁄8
Answer: 3⁄4 -
2. Algebra Two-step equations
Solve: 5x + 5 = 65
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 15cm and 20cm
Answer: 25cm -
4. Ratio Sharing in a ratio
Divide 128 in the ratio 2:1:1
Answer: 64, 32 and 32 -
5. Statistics Mean
Find the mean of: 13, 5, 16, 14
Answer: 12