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Cornerstone · Grades 3–5 Keystones #1 30 January 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 30 January 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 8x - 19 = 85

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

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

    Answer: 16.97cm
  4. 4. Ratio Sharing in a ratio

    Share 80 in the ratio 1:4

    Answer: 16 and 64
  5. 5. Statistics Mean

    Calculate the mean of: 41, 35, 10, 28, 11, 31, 44, 30

    Answer: 28.75

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