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Cornerstone · Grades 3–5 Keystones #1 28 May 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 28 May 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 8x - 15 = 57

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 19.21cm
  4. 4. Ratio Sharing in a ratio

    Share 114 in the ratio 1:2

    Answer: 38 and 76
  5. 5. Statistics Mean

    Find the mean of: 13, 18, 13, 8

    Answer: 13

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