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Cornerstone · Grades 3–5 Keystones #1 16 January 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 16 January 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄12 + 2⁄12

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 5x - 14 = 26

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.52cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 3:2

    Answer: 27 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 20, 24, 16, 31, 39, 49. Give your answer to 2 decimal places

    Answer: 29.83

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