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Cornerstone · Grades 3–5 Keystones #1 18 August 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 18 August 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄11 + 6⁄11

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

    Solve: 4x + 7 = 23

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

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Divide 126 in the ratio 3:1:3

    Answer: 54, 18 and 54
  5. 5. Statistics Mean

    Calculate the mean of: 27, 45, 43, 16, 45, 50. Give your answer to 2 decimal places

    Answer: 37.67

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