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Cornerstone · Grades 3–5 Keystones #1 25 September 2018 Skills week 1 of 7
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Five GCSE retrieval questions · 25 September 2018 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄10 + 4⁄10

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 6x - 10 = 44

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

    Calculate the hypotenuse when a = 12cm and b = 5cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Divide 126 in the ratio 1:3:2

    Answer: 21, 63 and 42
  5. 5. Statistics Mean

    Calculate the mean of: 11, 47, 21, 34, 34, 8, 6, 21

    Answer: 22.8

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