Keystones — Cornerstone
Five GCSE retrieval questions · 6 April 2017 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 9⁄11 + 1⁄11
Answer: 10⁄11 -
2. Algebra Two-step equations
Solve: 7x + 10 = 87
Answer: x = 11 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 12cm and 16cm
Answer: 20cm -
4. Ratio Sharing in a ratio
Divide 260 in the ratio 3:3:4
Answer: 78, 78 and 104 -
5. Statistics Mean
Find the mean of: 16, 6, 20
Answer: 14