Keystones — Cornerstone
Five GCSE retrieval questions · 27 June 2020 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 2⁄5 + 2⁄5
Answer: 4⁄5 -
2. Algebra Two-step equations
Solve: 7x + 6 = 48
Answer: x = 6 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 15cm and 20cm
Answer: 25cm -
4. Ratio Sharing in a ratio
Share 133 in the ratio 4:3
Answer: 76 and 57 -
5. Statistics Mean
Find the mean of: 3, 15, 2, 18
Answer: 9.5