Keystones — Cornerstone
Five GCSE retrieval questions · 16 September 2017 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 6⁄10 + 2⁄10
Answer: 4⁄5 -
2. Algebra Two-step equations
Solve: 2x + 15 = 29
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 5cm and b = 12cm
Answer: 13cm -
4. Ratio Sharing in a ratio
Share 98 in the ratio 3:4
Answer: 42 and 56 -
5. Statistics Mean
Find the mean of: 14, 19, 9, 18
Answer: 15