Keystones — Cornerstone
Five GCSE retrieval questions · 23 March 2019 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 6⁄8 + 1⁄8
Answer: 7⁄8 -
2. Algebra Two-step equations
Solve: 7x + 4 = 67
Answer: x = 9 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 7cm and b = 14cm
Answer: 15.65cm -
4. Ratio Sharing in a ratio
Share 65 in the ratio 3:2
Answer: 39 and 26 -
5. Statistics Mean
Find the mean of: 13, 14, 19, 16
Answer: 15.5