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Cornerstone · Grades 3–5 Keystones #1 10 June 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 10 June 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄9 + 6⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 7x + 15 = 85

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 8.94cm
  4. 4. Ratio Sharing in a ratio

    Share 25 in the ratio 1:4

    Answer: 5 and 20
  5. 5. Statistics Mean

    Calculate the mean of: 39, 21, 12, 25, 43, 32. Give your answer to 2 decimal places

    Answer: 28.67

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