Keystones — Cornerstone
Five GCSE retrieval questions · 18 November 2019 · 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 + 15 = 59
Answer: x = 11 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 9cm and 12cm
Answer: 15cm -
4. Ratio Sharing in a ratio
Share 80 in the ratio 2:3
Answer: 32 and 48 -
5. Statistics Mean
Find the mean of: 12, 13, 18, 16
Answer: 14.75