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Cornerstone · Grades 3–5 Keystones #1 11 June 2013 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 11 June 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄11 + 3⁄11

    Answer: 8⁄11
  2. 2. Algebra Two-step equations

    Solve: 6x - 18 = 54

    Answer: x = 12
  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 78 in the ratio 2:1

    Answer: 52 and 26
  5. 5. Statistics Mean

    Find the mean of: 4, 19, 18, 19

    Answer: 15

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