Keystones — Cornerstone
Five GCSE retrieval questions · 30 July 2020 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄8 + 2⁄3
Answer: 19⁄24 -
2. Algebra Two-step equations
Solve: 4x + 6 = 34
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 5cm and 12cm
Answer: 13cm -
4. Ratio Sharing in a ratio
Divide 40 in the ratio 1:2:1
Answer: 10, 20 and 10 -
5. Statistics Mean
Calculate the mean of: 8, 27, 5, 24, 35, 22
Answer: 20.2