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12 October, 11:32

First use front end rounding to estimate the answer. Then multiply to find the exact answer.

19.3

times 2.8

+1
Answers (2)
  1. 12 October, 12:05
    0
    Estimated answer = 57.0

    Exact answer = 54.04

    Step-by-step explanation:

    Since 19.3 is lesser than 19.5, it will be rounded down to 19.0

    Since 2.8 is greater than 2.5, it will be rounded up to 3.0

    Estimated multiplication

    19.0 * 3.0 = 57.0

    Actual multiplication

    19.3 * 2.8 = 54.04
  2. 12 October, 12:50
    0
    Estimate = 57

    Exact = 54.04

    Step-by-step explanation:

    We are given two number which we are to estimate by rounding off by front end and then multiply the exact values.

    Front end estimate:

    19.3 - --> 19

    2.8 - --> 3

    19 x 3 = 57

    Exact multiplication:

    19.3 x 2.8 = 54.04

    Using front end rounding, we get an estimate of 57 while multiplying the exact numbers we get 54.04.
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