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Cornerstone · Grades 3–5 Keystones #1 15 November 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 15 November 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄6 + 4⁄8

    Answer: 4⁄3
  2. 2. Algebra Two-step equations

    Solve: 2x - 19 = 3

    Answer: x = 11
  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 114 in the ratio 2:1

    Answer: 76 and 38
  5. 5. Statistics Mean

    Calculate the mean of: 5, 49, 9, 24, 33, 28, 34, 19

    Answer: 25.1

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