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Cornerstone · Grades 3–5 Keystones #1 22 November 2017 Skills week 1 of 7
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Five GCSE retrieval questions · 22 November 2017 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 3⁄7

    Answer: 5⁄7
  2. 2. Algebra Two-step equations

    Solve: 5x + 7 = 22

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

    Calculate the hypotenuse when a = 10cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 12.81cm
  4. 4. Ratio Sharing in a ratio

    Share 39 in the ratio 1:2

    Answer: 13 and 26
  5. 5. Statistics Mean

    Calculate the mean of: 30, 13, 50, 5, 27, 20, 13. Give your answer to 2 decimal places

    Answer: 22.57

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