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Cornerstone · Grades 3–5 Keystones #1 24 June 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 24 June 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄10 + 3⁄10

    Answer: 7⁄10
  2. 2. Algebra Two-step equations

    Solve: 2x - 9 = 13

    Answer: x = 11
  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 60 in the ratio 1:4

    Answer: 12 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 31, 27, 15, 29, 47, 5. Give your answer to 2 decimal places

    Answer: 25.67

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