Keystones — Cornerstone
Five GCSE retrieval questions · 11 November 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 5⁄8 + 1⁄8
Answer: 3⁄4 -
2. Algebra Two-step equations
Solve: 6x - 8 = 16
Answer: x = 4 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 6cm and 8cm
Answer: 10cm -
4. Ratio Sharing in a ratio
Divide 90 in the ratio 2:1:3
Answer: 30, 15 and 45 -
5. Statistics Mean
Find the mean of: 10, 7, 19, 12
Answer: 12