Keystones — Cornerstone
Five GCSE retrieval questions · 26 December 2018 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 2⁄10 + 2⁄10
Answer: 2⁄5 -
2. Algebra Two-step equations
Solve: 3x + 10 = 34
Answer: x = 8 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 9cm and 12cm
Answer: 15cm -
4. Ratio Sharing in a ratio
Share 78 in the ratio 1:2
Answer: 26 and 52 -
5. Statistics Mean
Find the mean of: 9, 18, 14
Answer: 13.666666666667