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Cornerstone · Grades 3–5 Keystones #1 25 July 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 25 July 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 3x - 6 = 30

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 48 in the ratio 1:1:2

    Answer: 12, 12 and 24
  5. 5. Statistics Mean

    Find the mean of: 20, 13, 7, 16

    Answer: 14

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