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Cornerstone · Grades 3–5 Keystones #1 26 July 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 26 July 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄9 + 1⁄9

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 8x - 11 = 37

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 13.45cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 1:2

    Answer: 15 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 46, 7, 19, 25, 43, 31, 45, 40

    Answer: 32

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