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Cornerstone · Grades 3–5 Keystones #1 20 August 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 20 August 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄7 + 2⁄7

    Answer: 3⁄7
  2. 2. Algebra Two-step equations

    Solve: 4x + 7 = 35

    Answer: x = 7
  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 150 in the ratio 2:1:2

    Answer: 60, 30 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 27, 27, 32, 40, 12, 23, 35, 26

    Answer: 27.75

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