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Cornerstone · Grades 3–5 Keystones #1 12 November 2019 Skills week 1 of 7
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Five GCSE retrieval questions · 12 November 2019 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄7 + 2⁄7

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

    Solve: 5x - 11 = 19

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 156 in the ratio 2:3:1

    Answer: 52, 78 and 26
  5. 5. Statistics Mean

    Find the mean of: 15, 5, 8, 8

    Answer: 9

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