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Cornerstone · Grades 3–5 Keystones #1 28 September 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 28 September 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄8 + 1⁄8

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

    Solve: 7x - 13 = 78

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 11.7cm
  4. 4. Ratio Sharing in a ratio

    Share 48 in the ratio 2:1

    Answer: 32 and 16
  5. 5. Statistics Mean

    Calculate the mean of: 48, 44, 49, 48, 33, 7, 36, 31

    Answer: 37

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