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Cornerstone · Grades 3–5 Keystones #1 25 December 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 25 December 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 4x + 12 = 44

    Answer: x = 8
  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

    Divide 90 in the ratio 3:1:2

    Answer: 45, 15 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 46, 32, 39, 25, 33, 25. Give your answer to 2 decimal places

    Answer: 33.33

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