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Cornerstone · Grades 3–5 Keystones #1 22 November 2012 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 November 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 3⁄7

    Answer: 5⁄7
  2. 2. Algebra Two-step equations

    Solve: 4x - 7 = 45

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Divide 160 in the ratio 2:1:1

    Answer: 80, 40 and 40
  5. 5. Statistics Mean

    Find the mean of: 5, 9, 17, 17

    Answer: 12

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