Keystones — Cornerstone
Five GCSE retrieval questions · 12 January 2020 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 4⁄8 + 6⁄7
Answer: 19⁄14 -
2. Algebra Two-step equations
Solve: 6x - 5 = 49
Answer: x = 9 -
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 51 in the ratio 2:1
Answer: 34 and 17 -
5. Statistics Mean
Find the mean of: 17, 20, 10, 5
Answer: 13