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Cornerstone · Grades 3–5 Keystones #1 27 September 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 September 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 5⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 2x - 17 = 3

    Answer: x = 10
  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 110 in the ratio 2:1:2

    Answer: 44, 22 and 44
  5. 5. Statistics Mean

    Find the mean of: 14, 2, 6, 6

    Answer: 7

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