Keystones — Cornerstone
Five GCSE retrieval questions · 29 November 2022 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄7 + 3⁄6
Answer: 9⁄14 -
2. Algebra Two-step equations
Solve: 7x + 12 = 89
Answer: x = 11 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 8cm and b = 11cm
Answer: 13.6cm -
4. Ratio Sharing in a ratio
Divide 198 in the ratio 4:4:1
Answer: 88, 88 and 22 -
5. Statistics Mean
Calculate the mean of: 24, 44, 25, 36, 33, 47, 15, 35
Answer: 32.4