Keystones — Cornerstone
Five GCSE retrieval questions · 13 May 2019 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 3⁄7 + 4⁄5
Answer: 43⁄35 -
2. Algebra Two-step equations
Solve: 5x - 9 = 31
Answer: x = 8 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 12cm and b = 4cm
Answer: 12.65cm -
4. Ratio Sharing in a ratio
Share 100 in the ratio 2:3
Answer: 40 and 60 -
5. Statistics Mean
Find the mean of: 11, 7, 5, 18, 11
Answer: 10.4