Keystones — Cornerstone
Five GCSE retrieval questions · 1 March 2020 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 3⁄8 + 1⁄6
Answer: 13⁄24 -
2. Algebra Two-step equations
Solve: 7x - 6 = 78
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 12cm and 35cm
Answer: 37cm -
4. Ratio Sharing in a ratio
Divide 50 in the ratio 1:1:3
Answer: 10, 10 and 30 -
5. Statistics Mean
Find the mean of: 16, 9, 7, 16
Answer: 12