Keystones — Cornerstone
Five GCSE retrieval questions · 20 March 2020 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 7⁄8 + 2⁄6
Answer: 29⁄24 -
2. Algebra Two-step equations
Solve: 6x + 3 = 45
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 8cm
Answer: 9.43cm -
4. Ratio Sharing in a ratio
Divide 77 in the ratio 1:3:3
Answer: 11, 33 and 33 -
5. Statistics Mean
Find the mean of: 12, 19, 2, 5
Answer: 9.5