Keystones — Cornerstone
Five GCSE retrieval questions · 10 June 2020 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 2⁄7 + 1⁄7
Answer: 3⁄7 -
2. Algebra Two-step equations
Solve: 4x - 20 = 24
Answer: x = 11 -
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: 4, 12, 6
Answer: 7.3333333333333