Keystones — Cornerstone
Five GCSE retrieval questions · 15 April 2021 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄8 + 2⁄7
Answer: 15⁄28 -
2. Algebra Two-step equations
Solve: 3x - 19 = 26
Answer: x = 15 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 9cm and b = 6cm
Answer: 10.82cm -
4. Ratio Sharing in a ratio
Divide 133 in the ratio 2:4:1
Answer: 38, 76 and 19 -
5. Statistics Mean
Find the mean of: 13, 10, 3, 3, 13
Answer: 8.4