Keystones — Cornerstone
Five GCSE retrieval questions · 12 July 2016 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄3 + 1⁄8
Answer: 11⁄24 -
2. Algebra Two-step equations
Solve: 4x - 11 = 41
Answer: x = 13 -
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 72 in the ratio 3:1
Answer: 54 and 18 -
5. Statistics Mean
Calculate the mean of: 27, 45, 32, 17, 37, 40, 39, 19
Answer: 32