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Cornerstone · Grades 3–5 Keystones #1 7 June 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 7 June 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄12 + 5⁄12

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 7x - 5 = 44

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Divide 126 in the ratio 3:3:1

    Answer: 54, 54 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 9, 29, 39, 33, 12, 32. Give your answer to 2 decimal places

    Answer: 25.67

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