Keystones — Cornerstone
Five GCSE retrieval questions · 22 July 2020 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 3⁄5 + 1⁄5
Answer: 4⁄5 -
2. Algebra Two-step equations
Solve: 2x + 3 = 19
Answer: x = 8 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 15cm and 36cm
Answer: 39cm -
4. Ratio Sharing in a ratio
Share 84 in the ratio 2:1
Answer: 56 and 28 -
5. Statistics Mean
Find the mean of: 15, 13, 2, 9
Answer: 9.75