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Cornerstone · Grades 3–5 Keystones #1 8 August 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 8 August 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 4⁄6

    Answer: 32⁄21
  2. 2. Algebra Two-step equations

    Solve: 4x + 5 = 29

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

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Share 56 in the ratio 3:4

    Answer: 24 and 32
  5. 5. Statistics Mean

    Calculate the mean of: 31, 49, 29, 24, 12, 40. Give your answer to 2 decimal places

    Answer: 30.83

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