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Cornerstone · Grades 3–5 Keystones #1 6 June 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 6 June 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄8 + 2⁄8

    Answer: 3⁄8
  2. 2. Algebra Two-step equations

    Solve: 6x - 13 = 29

    Answer: x = 7
  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 35 in the ratio 1:4

    Answer: 7 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 25, 21, 46, 36, 18, 39, 12, 22. Give your answer to 2 decimal places

    Answer: 27.38

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