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Cornerstone · Grades 3–5 Keystones #1 19 June 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 19 June 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄9 + 6⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 4x - 6 = 30

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

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 144 in the ratio 4:3:1

    Answer: 72, 54 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 22, 8, 5, 22, 50, 15. Give your answer to 2 decimal places

    Answer: 20.33

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