Keystones — Cornerstone
Five GCSE retrieval questions · 27 September 2021 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 10⁄12 + 1⁄12
Answer: 11⁄12 -
2. Algebra Two-step equations
Solve: 3x + 5 = 35
Answer: x = 10 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 9cm and 40cm
Answer: 41cm -
4. Ratio Sharing in a ratio
Share 54 in the ratio 1:2
Answer: 18 and 36 -
5. Statistics Mean
Find the mean of: 19, 16, 16, 6, 16
Answer: 14.6