Ask your own question, for FREE!
Mathematics 25 Online
OpenStudy (anonymous):

Round each number to the nearest hundred and solve. 956 - 623 Select the best answer from the choices provided. Select one of the options below as your answer: A. 330 B. 300 C. 400 D. 350

OpenStudy (goldphenoix):

What would 956 round to? What would 623 round to?

OpenStudy (goldphenoix):

You remember what I said before, right? Look at the hundred place. Then look at the first digit to the right. If it's a 0,1,2,3,4, you round down. If it's a 5,6,7,8,9 you round up.

OpenStudy (anonymous):

1000-600

OpenStudy (goldphenoix):

Correct! Subtract that, and that would give you your answer! :)

OpenStudy (anonymous):

ok i get it

OpenStudy (goldphenoix):

I hope this help! :)

OpenStudy (anonymous):

Estimate using front-end estimation. 6,228,342 ÷ 2,013,798 Select the best answer from the choices provided. Select one of the options below as your answer: A. 3,000,000 B. 30,000 C. 300 D. 3

OpenStudy (goldphenoix):

I never heard of " front-end estimation." but let me read about it. So wait a few minute.

OpenStudy (anonymous):

ok

OpenStudy (goldphenoix):

Alright. "With front end estimation, we only round and add the numbers in the leftmost place or the very last number on the left." If so, then 6,228,342 would be?

OpenStudy (anonymous):

just plzz tell me the ans

OpenStudy (goldphenoix):

I can't tell you the answer. I can only help you. :) Anyway, so what does 6,228,342 become? Look at the first digit in the left, which is 6. Now look at the first number in the right. Do you round up or down?

OpenStudy (anonymous):

i think it become 6000000

OpenStudy (goldphenoix):

6,000,000 is correct. What about 2,013,798?

OpenStudy (anonymous):

3000000

OpenStudy (anonymous):

anyway u r also study in school

OpenStudy (goldphenoix):

Nope. 2,013,798 Look at the first digit in the left, which is 2. Now look at the right. The number there is a 0. So do you round up or down? Well remember what I said before? "If it's a 0,1,2,3,4, you round down. If it's a 5,6,7,8,9 you round up." Now what do you think it is now?

OpenStudy (goldphenoix):

I'm not in school. I finished school a long time ago! (5 days)

OpenStudy (anonymous):

2010000

OpenStudy (anonymous):

3010000

OpenStudy (goldphenoix):

Hmm. Not quite. 2,013,798 First, do you round up or down?

OpenStudy (anonymous):

down

OpenStudy (anonymous):

?

OpenStudy (goldphenoix):

Yes.

OpenStudy (goldphenoix):

So 2 stay the same. But what about the other number. What would it become?

OpenStudy (goldphenoix):

Here's a tip: "This means that all numbers in other places will be zeros except the number in the leftmost place after the numbers are rounded"

OpenStudy (anonymous):

2000800

OpenStudy (goldphenoix):

You read my tip?

OpenStudy (anonymous):

yes

OpenStudy (goldphenoix):

So what would the number be?

OpenStudy (anonymous):

told u 2000800

OpenStudy (goldphenoix):

But the tip said " all numbers in other places will be zeros except the number in the leftmost place after the numbers are rounded"

OpenStudy (anonymous):

i dnt know

OpenStudy (goldphenoix):

I'll give this one away. The number would actually be 2,000,000. Since it said all digit would be zero except the first number in the left. So what is 6,000,000 divided by 2,000,000 give you?

OpenStudy (anonymous):

i told u first tym this

OpenStudy (goldphenoix):

^I do not understand what you wrote. o_O

OpenStudy (anonymous):

Which of the following expressions uses the best compatible numbers to estimate the problem below? 23 + 26 + 18 + 33 Select the best answer from the choices provided. Select one of the options below as your answer: A. 25 + 25 + 20 + 30 B. 20 + 20 + 20 + 30 C. 20 + 25 + 15 + 35 D. 20 + 20 + 15 + 35

OpenStudy (anonymous):

so answer is a does i m ryt

OpenStudy (goldphenoix):

Yes, you are correct. :)

OpenStudy (goldphenoix):

For that problem. What should we round it by? To the ones,tens, hundreds?

OpenStudy (anonymous):

Which expression is best suited for the clustering method of estimation? Select the best answer from the choices provided. Select one of the options below as your answer: A. 27 ÷ 3 × 2 B. 45 ÷ 42 × 43 C. 89 - 89 - 79 D. 46 × 6 + 4

OpenStudy (anonymous):

i just guess it

OpenStudy (goldphenoix):

Wait. For the problem before that, what did you put?

OpenStudy (anonymous):

i think it would be c

OpenStudy (goldphenoix):

C is not correct for the question before that one.

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!