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Cornerstone · Grades 3–5 Keystones #1 24 July 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 24 July 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 2⁄8

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 4x + 9 = 29

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 10.3cm
  4. 4. Ratio Sharing in a ratio

    Share 35 in the ratio 4:1

    Answer: 28 and 7
  5. 5. Statistics Mean

    Find the mean of: 9, 8, 4

    Answer: 7

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