Keystones — Cornerstone
Five GCSE retrieval questions · 24 July 2018 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 2⁄9 + 4⁄9
Answer: 2⁄3 -
2. Algebra Two-step equations
Solve: 4x - 15 = 9
Answer: x = 6 -
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 35 in the ratio 3:4
Answer: 15 and 20 -
5. Statistics Mean
Find the mean of: 5, 18, 5
Answer: 9.3333333333333