Keystones — Cornerstone
Five GCSE retrieval questions · 12 October 2018 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄4 + 7⁄8
Answer: 11⁄8 -
2. Algebra Two-step equations
Solve: 5x + 6 = 56
Answer: x = 10 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 20cm and 21cm
Answer: 29cm -
4. Ratio Sharing in a ratio
Share 60 in the ratio 4:1
Answer: 48 and 12 -
5. Statistics Mean
Find the mean of: 7, 10, 10, 6
Answer: 8.25