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Cornerstone · Grades 3–5 Keystones #1 19 October 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 19 October 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄12 + 6⁄12

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 5x + 12 = 27

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

    Calculate the hypotenuse when a = 5cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 10.3cm
  4. 4. Ratio Sharing in a ratio

    Share 90 in the ratio 3:2

    Answer: 54 and 36
  5. 5. Statistics Mean

    Find the mean of: 9, 9, 9

    Answer: 9

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