Keystones — Cornerstone
Five GCSE retrieval questions · 22 April 2020 · mathsvault.uk/keystones
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1. Number Adding fractions
Calculate: 6⁄8 + 1⁄8
Answer: 7⁄8 -
2. Algebra Two-step equations
Solve: 3x + 7 = 16
Answer: x = 3 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 11cm and b = 8cm
Answer: 13.6cm -
4. Ratio Sharing in a ratio
Divide 174 in the ratio 4:1:1
Answer: 116, 29 and 29 -
5. Statistics Mean
Find the mean of: 12, 10, 14
Answer: 12