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