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Cornerstone · Grades 3–5 Keystones #1 10 October 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 October 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄11 + 1⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x + 4 = 39

    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 230 in the ratio 3:3:4

    Answer: 69, 69 and 92
  5. 5. Statistics Mean

    Find the mean of: 4, 13, 7

    Answer: 8

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