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Cornerstone · Grades 3–5 Keystones #1 28 October 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 28 October 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄10 + 2⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 3x - 16 = -4

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 10.44cm
  4. 4. Ratio Sharing in a ratio

    Share 70 in the ratio 4:3

    Answer: 40 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 46, 5, 12, 9, 31, 13. Give your answer to 2 decimal places

    Answer: 19.33

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