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Cornerstone · Grades 3–5 Keystones #1 20 April 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 20 April 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 2⁄3

    Answer: 7⁄6
  2. 2. Algebra Two-step equations

    Solve: 4x - 11 = 33

    Answer: x = 11
  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 76 in the ratio 1:3

    Answer: 19 and 57
  5. 5. Statistics Mean

    Calculate the mean of: 50, 6, 25, 5, 46, 39, 13, 33

    Answer: 27.1

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