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Cornerstone · Grades 3–5 Keystones #1 19 November 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 19 November 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄12 + 1⁄12

    Answer: 5⁄12
  2. 2. Algebra Two-step equations

    Solve: 4x - 6 = 46

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 3:2

    Answer: 27 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 46, 21, 50, 32, 30, 33. Give your answer to 2 decimal places

    Answer: 35.33

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