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Cornerstone · Grades 3–5 Keystones #1 26 August 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 26 August 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄7 + 2⁄7

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

    Solve: 2x + 15 = 27

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

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio Sharing in a ratio

    Divide 80 in the ratio 1:2:1

    Answer: 20, 40 and 20
  5. 5. Statistics Mean

    Find the mean of: 4, 12, 2

    Answer: 6

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