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Cornerstone · Grades 3–5 Keystones #1 31 January 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 31 January 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄11 + 2⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 3x + 6 = 30

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 3:2

    Answer: 54 and 36
  5. 5. Statistics Mean

    Find the mean of: 8, 8, 2

    Answer: 6

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