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Cornerstone · Grades 3–5 Keystones #1 29 August 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 29 August 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄9 + 2⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 7x + 3 = 45

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

    Calculate the hypotenuse when a = 12cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 13.89cm
  4. 4. Ratio Sharing in a ratio

    Share 85 in the ratio 4:1

    Answer: 68 and 17
  5. 5. Statistics Mean

    Calculate the mean of: 27, 15, 12, 49, 41, 13, 29, 33. Give your answer to 2 decimal places

    Answer: 27.38

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