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Cornerstone · Grades 3–5 Keystones #1 9 June 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 June 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄7 + 2⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 7x + 12 = 54

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 55 in the ratio 2:1:2

    Answer: 22, 11 and 22
  5. 5. Statistics Mean

    Find the mean of: 10, 18, 7, 3, 12

    Answer: 10

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