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Cornerstone · Grades 3–5 Keystones #1 23 January 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 23 January 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 2⁄8

    Answer: 3⁄8
  2. 2. Algebra Two-step equations

    Solve: 4x + 3 = 31

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 92 in the ratio 1:2:1

    Answer: 23, 46 and 23
  5. 5. Statistics Mean

    Calculate the mean of: 43, 27, 28, 33, 43, 14, 27, 31

    Answer: 30.75

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