Keystones — Cornerstone
Five GCSE retrieval questions · 8 January 2020 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 3⁄9 + 2⁄9
Answer: 5⁄9 -
2. Algebra Two-step equations
Solve: 6x - 5 = 31
Answer: x = 6 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 12cm and 16cm
Answer: 20cm -
4. Ratio Sharing in a ratio
Share 48 in the ratio 2:1
Answer: 32 and 16 -
5. Statistics Mean
Find the mean of: 18, 7, 8, 5
Answer: 9.5