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Cornerstone · Grades 3–5 Keystones #1 25 December 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 25 December 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 2⁄3

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

    Solve: 7x - 17 = 60

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

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

    Answer: 7.07cm
  4. 4. Ratio Sharing in a ratio

    Divide 70 in the ratio 3:3:1

    Answer: 30, 30 and 10
  5. 5. Statistics Mean

    Calculate the mean of: 28, 39, 30, 44, 35, 43, 36, 15

    Answer: 33.75

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