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

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

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 5x - 5 = 25

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 14.42cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 2:3

    Answer: 24 and 36
  5. 5. Statistics Mean

    Find the mean of: 7, 10, 11, 12, 5

    Answer: 9

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