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Mathematics 19 Online
OpenStudy (anonymous):

Select the most reasonable estimated answer. 527.8 – 321.9 A. 200 B. 300 C. 220 D. 210

OpenStudy (anonymous):

Ok

OpenStudy (anonymous):

Let's round.

OpenStudy (anonymous):

What does 27.8 round up to?

OpenStudy (anonymous):

Round it up to the nearest tens place.

OpenStudy (anonymous):

it rounds to 30

OpenStudy (anonymous):

Good.

OpenStudy (anonymous):

Round 21.9 to the nearest tens.

OpenStudy (anonymous):

rounds to 20

OpenStudy (k_lynn):

Before I start subtracting, I like to round my numbers. So what does 527.8 and 321.9 round to @princessdraculaura157

OpenStudy (anonymous):

530.8 and 320.9

OpenStudy (k_lynn):

actually, since we have decimals, lets round those numbers to whole numbers. So 8 is greater than 5 and so is 9. So now what do those numbers round to?

OpenStudy (igreen):

Actually it would be 530 and 320..

OpenStudy (igreen):

So just subtract those to get your answer.

OpenStudy (anonymous):

i got 209.9 so i think the answer is D. 210, heart(<3) if i'm right broken-heart(</3) if i'm wrong

OpenStudy (igreen):

Yep, you got it.

OpenStudy (igreen):

Er.. <3

OpenStudy (anonymous):

5. Is the given answer a reasonable solution to the problem? 8.89 • 12.13 = 107.8357 A. No B. Yes

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