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Cornerstone · Grades 3–5 Keystones #1 2 August 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 2 August 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 3⁄5

    Answer: 46⁄35
  2. 2. Algebra Two-step equations

    Solve: 7x - 6 = 78

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 16.12cm
  4. 4. Ratio Sharing in a ratio

    Share 108 in the ratio 2:1

    Answer: 72 and 36
  5. 5. Statistics Mean

    Find the mean of: 14, 9, 10

    Answer: 11

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