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Cornerstone · Grades 3–5 Keystones #1 26 January 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 26 January 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄11 + 1⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 4x + 13 = 61

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 108 in the ratio 1:2:3

    Answer: 18, 36 and 54
  5. 5. Statistics Mean

    Find the mean of: 16, 4, 20, 2

    Answer: 10.5

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