Keystones — Cornerstone
Five GCSE retrieval questions · 15 April 2017 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 2⁄10 + 1⁄10
Answer: 3⁄10 -
2. Algebra Two-step equations
Solve: 8x - 17 = 31
Answer: x = 6 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 8cm and b = 6cm
Answer: 10cm -
4. Ratio Sharing in a ratio
Share 25 in the ratio 2:3
Answer: 10 and 15 -
5. Statistics Mean
Find the mean of: 16, 5, 10, 13, 6
Answer: 10