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13 July, 13:17

Mrs. Bennett has graded 20% of her 150 students' papers. How many papers does she still need to finish grading?

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Answers (2)
  1. 13 July, 14:16
    0
    120

    You can find out how many she has graded by multiplying 150 by the decimal version of 20% (.20). Then, subtract the number you get by 150.
  2. 13 July, 16:27
    0
    150 - (150 x 20%)

    or

    150 - (150 x. 2)

    Simplified:

    150 - 30

    120
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