Keystones — Cornerstone
Five GCSE retrieval questions · 25 November 2019 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 7⁄12 + 3⁄12
Answer: 5⁄6 -
2. Algebra Two-step equations
Solve: 3x + 6 = 24
Answer: x = 6 -
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 200 in the ratio 4:1:3
Answer: 100, 25 and 75 -
5. Statistics Mean
Find the mean of: 8, 18, 10, 14
Answer: 12.5