Keystones — Cornerstone
Five GCSE retrieval questions · 12 February 2020 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄4 + 2⁄5
Answer: 13⁄20 -
2. Algebra Two-step equations
Solve: 4x - 15 = 41
Answer: x = 14 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 4cm and b = 5cm
Answer: 6.4cm -
4. Ratio Sharing in a ratio
Divide 98 in the ratio 1:3:3
Answer: 14, 42 and 42 -
5. Statistics Mean
Find the mean of: 11, 3, 10
Answer: 8