Keystones — Cornerstone
Five GCSE retrieval questions · 21 May 2020 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 5⁄7 + 3⁄8
Answer: 61⁄56 -
2. Algebra Two-step equations
Solve: 8x - 14 = 98
Answer: x = 14 -
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 60 in the ratio 1:4
Answer: 12 and 48 -
5. Statistics Mean
Find the mean of: 5, 20, 6
Answer: 10.333333333333