Keystones — Cornerstone
Five GCSE retrieval questions · 14 January 2018 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 3⁄8 + 2⁄4
Answer: 7⁄8 -
2. Algebra Two-step equations
Solve: 3x + 13 = 22
Answer: x = 3 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 12cm and 16cm
Answer: 20cm -
4. Ratio Sharing in a ratio
Share 70 in the ratio 2:3
Answer: 28 and 42 -
5. Statistics Mean
Find the mean of: 5, 19, 3
Answer: 9