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Cornerstone · Grades 3–5 Keystones #1 24 January 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 24 January 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄6 + 2⁄6

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

    Solve: 4x - 13 = 7

    Answer: x = 5
  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 108 in the ratio 3:1:2

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

    Calculate the mean of: 6, 8, 41, 9, 7, 7, 47

    Answer: 17.9

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