Keystones — Cornerstone
Five GCSE retrieval questions · 2 May 2019 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 3⁄6 + 2⁄4
Answer: 1⁄1 -
2. Algebra Two-step equations
Solve: 2x - 5 = 13
Answer: x = 9 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 12cm and 35cm
Answer: 37cm -
4. Ratio Sharing in a ratio
Divide 85 in the ratio 3:1:1
Answer: 51, 17 and 17 -
5. Statistics Mean
Calculate the mean of: 48, 7, 13, 36, 27, 45, 22
Answer: 28.3