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24 December, 10:33

Last week, mallory flew two round trips. They were 3,720 miles and 5,985 miles. Select all of the choices that are good estimate for the total miles mallory flew last week by rounding to place values.

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  1. 24 December, 13:15
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    Mallory flew in total 10,000 miles, rounded : D

    Step-by-step explanation:

    Since we're using rounding to place values, first we have to have the total amount of miles flown by Mallory, so we make the sum:

    3,720 + 5,985 = 9,705 miles

    then, we have to round thefirst digit to the right following this rule

    0-4 is rounded down

    5-9 is rounded up

    now, since the number we want to round is the first digit on the left (9), and following the rules above, we change the "9" for a "10". the rest of the numbers are now transformed into zeros (0)

    9,705 >>> rounding it up >>> 10,000

    Let me know if you have any questions XD
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