Keystones — Cornerstone
Five GCSE retrieval questions · 4 November 2017 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 3⁄6 + 1⁄6
Answer: 2⁄3 -
2. Algebra Two-step equations
Solve: 4x - 10 = 34
Answer: x = 11 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 15cm and 36cm
Answer: 39cm -
4. Ratio Sharing in a ratio
Divide 98 in the ratio 3:3:1
Answer: 42, 42 and 14 -
5. Statistics Mean
Find the mean of: 7, 14, 9
Answer: 10