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Cornerstone · Grades 3–5 Keystones #1 11 October 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 11 October 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄9 + 1⁄9

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

    Solve: 4x + 15 = 51

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 7.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 88 in the ratio 1:3:4

    Answer: 11, 33 and 44
  5. 5. Statistics Mean

    Calculate the mean of: 35, 31, 14, 15, 29, 16. Give your answer to 2 decimal places

    Answer: 23.33

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