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Cornerstone · Grades 3–5 Keystones #1 3 December 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 3 December 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 1⁄5

    Answer: 3⁄5
  2. 2. Algebra Two-step equations

    Solve: 3x + 5 = 29

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 4cm

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

    Divide 135 in the ratio 3:2:4

    Answer: 45, 30 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 5, 24, 48, 34, 45, 44, 36, 30

    Answer: 33.25

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