Keystones — Cornerstone
Five GCSE retrieval questions · 1 December 2019 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 1⁄8 + 2⁄8
Answer: 3⁄8 -
2. Algebra Two-step equations
Solve: 6x + 13 = 67
Answer: x = 9 -
3. Geometry Pythagoras — hypotenuse
Find the hypotenuse of a right triangle with sides 7cm and 24cm
Answer: 25cm -
4. Ratio Sharing in a ratio
Divide 176 in the ratio 2:1:1
Answer: 88, 44 and 44 -
5. Statistics Mean
Find the mean of: 10, 20, 11, 5, 11
Answer: 11.4