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Cornerstone · Grades 3–5 Keystones #1 6 November 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 6 November 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 2⁄4

    Answer: 11⁄14
  2. 2. Algebra Two-step equations

    Solve: 2x + 8 = 30

    Answer: x = 11
  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 105 in the ratio 2:2:1

    Answer: 42, 42 and 21
  5. 5. Statistics Mean

    Calculate the mean of: 13, 16, 11, 26, 35, 47, 50. Give your answer to 2 decimal places

    Answer: 28.29

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