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

  1. 1. Number Adding fractions

    Add: 2⁄4 + 2⁄3

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

    Solve: 2x - 13 = 7

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 6cm and b = 11cm

    Answer: 12.53cm
  4. 4. Ratio Sharing in a ratio

    Divide 84 in the ratio 2:3:2

    Answer: 24, 36 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 22, 21, 18, 34, 44, 24

    Answer: 27.2

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