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

Five GCSE retrieval questions · 1 September 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄4 + 1⁄3

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 6x + 4 = 76

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

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

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

    Share 36 in the ratio 1:2

    Answer: 12 and 24
  5. 5. Statistics Mean

    Calculate the mean of: 27, 45, 7, 37, 6, 27, 33

    Answer: 26

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