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Cornerstone · Grades 3–5 Keystones #1 14 December 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 14 December 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 4⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 6x + 4 = 58

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

    Calculate the hypotenuse when a = 7cm and b = 12cm

    Answer: 13.89cm
  4. 4. Ratio Sharing in a ratio

    Divide 140 in the ratio 3:4:3

    Answer: 42, 56 and 42
  5. 5. Statistics Mean

    Find the mean of: 6, 14, 9

    Answer: 9.6666666666667

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