Keystones — Cornerstone
Five GCSE retrieval questions · 24 January 2015 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 6⁄10 + 3⁄10
Answer: 9⁄10 -
2. Algebra Two-step equations
Solve: 5x - 20 = 15
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 3cm and 4cm
Answer: 5cm -
4. Ratio Sharing in a ratio
Share 48 in the ratio 3:1
Answer: 36 and 12 -
5. Statistics Mean
Find the mean of: 8, 6, 4
Answer: 6