Keystones — Cornerstone
Five GCSE retrieval questions · 27 February 2019 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄4 + 6⁄8
Answer: 5⁄4 -
2. Algebra Two-step equations
Solve: 8x - 15 = 97
Answer: x = 14 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 3cm and 4cm
Answer: 5cm -
4. Ratio Sharing in a ratio
Share 140 in the ratio 4:3
Answer: 80 and 60 -
5. Statistics Mean
Calculate the mean of: 27, 36, 18, 32, 14, 45, 34
Answer: 29.4