Keystones — Cornerstone
Five GCSE retrieval questions · 15 April 2019 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 3⁄8 + 3⁄8
Answer: 3⁄4 -
2. Algebra Two-step equations
Solve: 8x - 14 = 42
Answer: x = 7 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 20cm and 21cm
Answer: 29cm -
4. Ratio Sharing in a ratio
Share 45 in the ratio 1:2
Answer: 15 and 30 -
5. Statistics Mean
Find the mean of: 10, 6, 11
Answer: 9