Keystones — Cornerstone
Five GCSE retrieval questions · 1 January 2018 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 2⁄10 + 3⁄10
Answer: 1⁄2 -
2. Algebra Two-step equations
Solve: 3x + 14 = 41
Answer: x = 9 -
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 30 in the ratio 3:2
Answer: 18 and 12 -
5. Statistics Mean
Find the mean of: 15, 16, 8
Answer: 13