Keystones — Cornerstone
Five GCSE retrieval questions · 26 November 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 4⁄10 + 2⁄10
Answer: 3⁄5 -
2. Algebra Two-step equations
Solve: 7x + 13 = 97
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 5cm and 12cm
Answer: 13cm -
4. Ratio Sharing in a ratio
Divide 96 in the ratio 3:3:2
Answer: 36, 36 and 24 -
5. Statistics Mean
Find the mean of: 1, 6, 18, 19
Answer: 11