Keystones — Cornerstone
Five GCSE retrieval questions · 21 March 2018 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 5⁄8 + 5⁄7
Answer: 75⁄56 -
2. Algebra Two-step equations
Solve: 7x - 14 = 70
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 10cm
Answer: 11.18cm -
4. Ratio Sharing in a ratio
Share 54 in the ratio 1:2
Answer: 18 and 36 -
5. Statistics Mean
Calculate the mean of: 27, 41, 29, 32, 34, 47, 29
Answer: 34.1