Keystones — Cornerstone
Five GCSE retrieval questions · 15 May 2022 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 7⁄11 + 1⁄11
Answer: 8⁄11 -
2. Algebra Two-step equations
Solve: 5x + 7 = 62
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
Divide 132 in the ratio 3:1:2
Answer: 66, 22 and 44 -
5. Statistics Mean
Calculate the mean of: 28, 17, 17, 30, 39, 33, 39, 34
Answer: 29.6