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Cornerstone · Grades 3–5 Keystones #1 11 March 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 11 March 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄12 + 4⁄12

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

    Solve: 3x + 8 = 35

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 140 in the ratio 3:3:1

    Answer: 60, 60 and 20
  5. 5. Statistics Mean

    Find the mean of: 10, 18, 17, 20, 5

    Answer: 14

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