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Cornerstone · Grades 3–5 Keystones #1 10 January 2016 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 10 January 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄11 + 3⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 7x + 6 = 41

    Answer: x = 5
  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 130 in the ratio 2:1:2

    Answer: 52, 26 and 52
  5. 5. Statistics Mean

    Calculate the mean of: 49, 32, 27, 28, 6, 24, 20, 20

    Answer: 25.75

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