Keystones — Cornerstone
Five GCSE retrieval questions · 20 October 2019 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 3⁄6 + 2⁄6
Answer: 5⁄6 -
2. Algebra Two-step equations
Solve: 4x + 6 = 42
Answer: x = 9 -
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 150 in the ratio 2:1:2
Answer: 60, 30 and 60 -
5. Statistics Mean
Find the mean of: 11, 15, 12
Answer: 12.666666666667