Keystones — Cornerstone
Five GCSE retrieval questions · 11 March 2018 · mathsvault.uk/keystones
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1. Number Adding fractions
Add: 2⁄4 + 3⁄5
Answer: 11⁄10 -
2. Algebra Two-step equations
Solve: 2x + 15 = 39
Answer: x = 12 -
3. Geometry Pythagoras — hypotenuse
Calculate the hypotenuse when a = 12cm and b = 14cm. Give your answer to 2 decimal places
Answer: 18.44cm -
4. Ratio Sharing in a ratio
Divide 110 in the ratio 2:2:1
Answer: 44, 44 and 22 -
5. Statistics Mean
Find the mean of: 7, 13, 12, 4
Answer: 9