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Cornerstone · Grades 3–5 Keystones #1 29 July 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 29 July 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄11 + 5⁄11

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

    Solve: 4x + 15 = 51

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 36 in the ratio 2:1

    Answer: 24 and 12
  5. 5. Statistics Mean

    Calculate the mean of: 47, 30, 26, 30, 20, 47, 41

    Answer: 34.4

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