Keystones — Cornerstone
Five GCSE retrieval questions · 22 April 2019 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 7⁄9 + 1⁄9
Answer: 8⁄9 -
2. Algebra Two-step equations
Solve: 2x + 13 = 33
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 65 in the ratio 1:4
Answer: 13 and 52 -
5. Statistics Mean
Find the mean of: 4, 7, 7, 3
Answer: 5.25