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Cornerstone · Grades 3–5 Keystones #1 10 September 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 September 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄11 + 5⁄11

    Answer: 8⁄11
  2. 2. Algebra Two-step equations

    Solve: 2x + 10 = 24

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

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 96 in the ratio 1:2:1

    Answer: 24, 48 and 24
  5. 5. Statistics Mean

    Find the mean of: 4, 12, 8

    Answer: 8

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