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Algebra 23 Online
OpenStudy (anonymous):

follow principles of estimation to find an approximate value. round each number so that there is one nonzero digit do not find the exact value 73 long division 713,357 thanks in advance

OpenStudy (whpalmer4):

you want to estimate 713,357 divided by 73? okay, round each number so that there is one nonzero digit. what is 713,357 rounded to the nearest 100,000? what is 73 rounded to the nearest 10? divide the first of those by the second (it should be quite easy) and you'll have your approximate value.

OpenStudy (anonymous):

thanks will try that and hope it works :)

OpenStudy (whpalmer4):

no need to hope. just do it! what's your answer?

OpenStudy (anonymous):

700,000/70,000 = 100,000

OpenStudy (anonymous):

sorry for delay someone at door

OpenStudy (whpalmer4):

no problem, but the division was incorrect, and so was the rounding :-( 713,357 rounds to 700,000 — that's right 73 does not round to 70,000 700,000/70,000 does not equal 100,000, it equals 10 what is 73 rounded to the nearest 10?

OpenStudy (anonymous):

70

OpenStudy (anonymous):

so answer is 10,000

OpenStudy (whpalmer4):

Bingo!

OpenStudy (whpalmer4):

and if you actually did the original division, the answer is about 9772.01, so 10,000 is a pretty good estimate.

OpenStudy (whpalmer4):

off by about 2.3%

OpenStudy (anonymous):

so hit to many zeros brain fried now

OpenStudy (anonymous):

thanks for easy explanation well it was once my brain defrosted :)

OpenStudy (whpalmer4):

where are you having your brain frozen? upper midwest?

OpenStudy (whpalmer4):

my sister is a school teacher in the Minneapolis area who has been enjoying the extreme cold this winter because it's gotten her a few extra "vacation" days :-)

OpenStudy (anonymous):

Zimmerman, MN

OpenStudy (anonymous):

nice to have those extra days

OpenStudy (anonymous):

thanks for all help

OpenStudy (anonymous):

enjoy y our week end

OpenStudy (anonymous):

hot 1 for yiu niceeee

OpenStudy (anonymous):

you

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