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29 March, 11:13

A student had to multiply 328 x 41. The student's answer was 4,598. Use estimation to explain why this answer is not reasonable

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  1. 29 March, 11:38
    0
    With a number of 328*41 and coming up with a answer of nearly 5,000 is not reasonable because just estimating it 300*10 is 3,000 so times that by 4 is 12,000.
  2. 29 March, 11:41
    0
    Its not reasonable, here is why.

    Grab a sheet of paper and follow along, write 328 x 41 and put 328 on top of 41.

    multiply 8 x 1

    multiply 2 x 1

    multiply 3 x 1

    multiply 8 x 4 which is 32

    multiply 2 x 4 which is 8

    multiply 3 x 4 which is 12

    bring down the carry digit of 1

    add 328 + 13120 which is 13448

    or multiply 328 x 41 and u get 13448

    The answer is not reasonable because its not the correct solution.
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