Keystones — Cornerstone
Five GCSE retrieval questions · 20 February 2019 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 1⁄4 + 4⁄6
Answer: 11⁄12 -
2. Algebra Two-step equations
Solve: 4x - 11 = 45
Answer: x = 14 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 9cm and 12cm
Answer: 15cm -
4. Ratio Sharing in a ratio
Divide 190 in the ratio 3:3:4
Answer: 57, 57 and 76 -
5. Statistics Mean
Find the mean of: 18, 2, 9, 6
Answer: 8.75