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Cornerstone · Grades 3–5 Keystones #1 17 June 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 17 June 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄10 + 1⁄10

    Answer: 2⁄5
  2. 2. Algebra Two-step equations

    Solve: 6x + 13 = 67

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 8.06cm
  4. 4. Ratio Sharing in a ratio

    Divide 126 in the ratio 3:2:1

    Answer: 63, 42 and 21
  5. 5. Statistics Mean

    Find the mean of: 4, 4, 10, 3, 9

    Answer: 6

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