Keystones — Cornerstone
Five GCSE retrieval questions · 26 May 2021 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 6⁄10 + 1⁄10
Answer: 7⁄10 -
2. Algebra Two-step equations
Solve: 3x - 8 = 31
Answer: x = 13 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 9cm and 40cm
Answer: 41cm -
4. Ratio Sharing in a ratio
Divide 234 in the ratio 1:4:4
Answer: 26, 104 and 104 -
5. Statistics Mean
Calculate the mean of: 29, 39, 29, 32, 26, 35, 5, 24
Answer: 27.4