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Cornerstone · Grades 3–5 Keystones #1 13 November 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 13 November 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄12 + 2⁄12

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

    Solve: 8x - 6 = 50

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 15.62cm
  4. 4. Ratio Sharing in a ratio

    Share 78 in the ratio 2:1

    Answer: 52 and 26
  5. 5. Statistics Mean

    Find the mean of: 8, 4, 16, 5, 12

    Answer: 9

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