The times for erin’s five laps around the track were 56.6 seconds, 57.9 seconds, 57.5 seconds, 65.3

The times for erin’s five laps around the track were 56.6 seconds, 57.9 seconds, 57.5 seconds, 65.3 seconds, and 65.7 seconds. using rounding to the nearest whole second as the only estimation technique, what is the total estimated time for erin’s five laps in seconds?

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  1. 303 s  

    Step-by-step explanation:

    Lap             Time/s

    1                   56.6 s

    2                   57.9 s

    3                   57.5 s

    4                   65.3 s

    5                   65.7 s

       TOTAL  = 303    s

  2. 304 seconds

    Step-by-step explanation:

    The question asks for you to round to the nearest whole second.

    To round to the nearest whole second: you look at the tenth space (first number on the right of the decimal). If it is 5 or more, then the number to the left of the decimal goes up one and you drop all numbers after the decimal. If it is less than 5, the numbers to the left of the decimal stay the same. For example: 3.5 would become 4 and 3.3 would become 3.

    Step 1: Round the numbers

    1st number 56.6 rounds to 57  

    2nd number 57.9 rounds to 58

    3rd number 57.5 rounds to 58

    4th number 65.3 rounds to 65

    5th number 65.7 rounds to 66

    Step 2: Add the rounded numbers

    57 + 58 + 58 + 65 + 66 = 304

    Your answer is 304 seconds

  3. Say the first 3 were 60 seconds and the other 2 were 70 seconds

    that comes to 180 sec. and 140 sec. 180+140=320

    320 seconds

  4. To get the answer, you must add all the given times.
    56.6 + 57.9 + 57.5 + 65.3 + 65.7 = 303
    Therefore, you answer would be 303.
    Hope this helps!

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