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Cornerstone · Grades 3–5 Keystones #1 29 June 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 29 June 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 2⁄5

    Answer: 44⁄35
  2. 2. Algebra Two-step equations

    Solve: 4x + 10 = 34

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

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Share 66 in the ratio 2:1

    Answer: 44 and 22
  5. 5. Statistics Mean

    Find the mean of: 9, 2, 7, 10

    Answer: 7

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