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Cornerstone · Grades 3–5 Keystones #1 6 April 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 6 April 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄5 + 2⁄5

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

    Solve: 8x - 6 = 50

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

    Calculate the hypotenuse when a = 11cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 15.56cm
  4. 4. Ratio Sharing in a ratio

    Share 50 in the ratio 1:4

    Answer: 10 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 16, 48, 14, 29, 22, 23. Give your answer to 2 decimal places

    Answer: 25.33

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