Keystones — Cornerstone
Five GCSE retrieval questions · 24 December 2019 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 4⁄5 + 3⁄6
Answer: 13⁄10 -
2. Algebra Two-step equations
Solve: 8x - 20 = 76
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 7cm and 24cm
Answer: 25cm -
4. Ratio Sharing in a ratio
Share 96 in the ratio 2:1
Answer: 64 and 32 -
5. Statistics Mean
Calculate the mean of: 12, 26, 48, 37, 24, 30
Answer: 29.5