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Cornerstone · Grades 3–5 Keystones #1 14 February 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 14 February 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄9 + 2⁄9

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

    Solve: 5x + 14 = 64

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 14.42cm
  4. 4. Ratio Sharing in a ratio

    Divide 78 in the ratio 1:3:2

    Answer: 13, 39 and 26
  5. 5. Statistics Mean

    Find the mean of: 6, 12, 6, 7, 9

    Answer: 8

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