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Cornerstone · Grades 3–5 Keystones #1 19 August 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 19 August 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄8 + 1⁄8

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

    Solve: 5x + 5 = 25

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Share 70 in the ratio 3:4

    Answer: 30 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 30, 34, 24, 37, 49, 40. Give your answer to 2 decimal places

    Answer: 35.67

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