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Cornerstone · Grades 3–5 Keystones #1 24 June 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 24 June 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 3⁄6

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

    Solve: 4x + 4 = 32

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Share 55 in the ratio 2:3

    Answer: 22 and 33
  5. 5. Statistics Mean

    Calculate the mean of: 9, 35, 31, 7, 29, 32, 35, 16

    Answer: 24.25

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