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Cornerstone · Grades 3–5 Keystones #1 22 April 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 22 April 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄11 + 6⁄11

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

    Solve: 3x + 4 = 16

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Divide 105 in the ratio 3:1:1

    Answer: 63, 21 and 21
  5. 5. Statistics Mean

    Calculate the mean of: 48, 48, 29, 19, 43, 40, 18, 41

    Answer: 35.75

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