Keystones — Cornerstone
Five GCSE retrieval questions · 15 January 2019 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 4⁄7 + 2⁄3
Answer: 26⁄21 -
2. Algebra Two-step equations
Solve: 3x - 17 = 22
Answer: x = 13 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 12cm and b = 12cm
Answer: 16.97cm -
4. Ratio Sharing in a ratio
Share 77 in the ratio 4:3
Answer: 44 and 33 -
5. Statistics Mean
Calculate the mean of: 24, 11, 11, 43, 12, 35, 40, 41
Answer: 27.1