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Cornerstone · Grades 3–5 Keystones #1 28 November 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 28 November 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄4 + 6⁄7

    Answer: 31⁄28
  2. 2. Algebra Two-step equations

    Solve: 5x - 10 = 65

    Answer: x = 15
  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

    Divide 65 in the ratio 1:2:2

    Answer: 13, 26 and 26
  5. 5. Statistics Mean

    Calculate the mean of: 27, 47, 24, 43, 41, 10, 12

    Answer: 29.1

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