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Cornerstone · Grades 3–5 Keystones #1 12 August 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 12 August 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 6x - 11 = 55

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Share 68 in the ratio 3:1

    Answer: 51 and 17
  5. 5. Statistics Mean

    Calculate the mean of: 14, 7, 22, 46, 41, 34, 17. Give your answer to 2 decimal places

    Answer: 25.86

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