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Cornerstone · Grades 3–5 Keystones #1 18 December 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 18 December 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄9 + 1⁄9

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

    Solve: 2x - 17 = 11

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 14.87cm
  4. 4. Ratio Sharing in a ratio

    Share 40 in the ratio 3:2

    Answer: 24 and 16
  5. 5. Statistics Mean

    Calculate the mean of: 8, 13, 37, 20, 36, 37. Give your answer to 2 decimal places

    Answer: 25.17

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