Keystones — Cornerstone
Five GCSE retrieval questions · 22 August 2019 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄5 + 5⁄7
Answer: 39⁄35 -
2. Algebra Two-step equations
Solve: 4x + 11 = 27
Answer: x = 4 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 11cm and b = 5cm
Answer: 12.08cm -
4. Ratio Sharing in a ratio
Divide 66 in the ratio 4:1:1
Answer: 44, 11 and 11 -
5. Statistics Mean
Find the mean of: 3, 2, 12
Answer: 5.6666666666667