Keystones — Cornerstone
Five GCSE retrieval questions · 24 June 2017 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄3 + 1⁄4
Answer: 11⁄12 -
2. Algebra Two-step equations
Solve: 3x + 8 = 23
Answer: x = 5 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 12cm and b = 4cm. Give your answer to 2 decimal places
Answer: 12.65cm -
4. Ratio Sharing in a ratio
Divide 176 in the ratio 3:4:1
Answer: 66, 88 and 22 -
5. Statistics Mean
Find the mean of: 3, 3, 11, 14, 9
Answer: 8