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Cornerstone · Grades 3–5 Keystones #1 12 January 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 12 January 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄9 + 1⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 7x + 3 = 59

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 18.44cm
  4. 4. Ratio Sharing in a ratio

    Share 70 in the ratio 4:1

    Answer: 56 and 14
  5. 5. Statistics Mean

    Calculate the mean of: 25, 50, 27, 14, 7, 24, 6, 15

    Answer: 21

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