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Mathematics 10 Online
OpenStudy (anonymous):

can any1 help me with 10 questions ? pleasee

OpenStudy (rajee_sam):

I will try a few if it is related to math

OpenStudy (rajee_sam):

@apple69

OpenStudy (anonymous):

yes its related to math im not really good at math :/

OpenStudy (rajee_sam):

shoot

OpenStudy (rajee_sam):

No.1?

OpenStudy (anonymous):

87.653 as mixed number ?

OpenStudy (rajee_sam):

A mixed number is a number that has a whole number part and a fraction part. In your number 87.653 ; 87 is your whole number and .653 contributes to the fraction part. So keep 87 as it is. How can you write .653 as a fraction ( Meaning something over something)?

OpenStudy (anonymous):

well i have to write it as a mixed number ?

OpenStudy (rajee_sam):

I know. did you read my first line that explains what a mixed number is?

OpenStudy (anonymous):

yeahh i read it ... but i dont really know how to write it

OpenStudy (rajee_sam):

A mixed number looks something like this \[3\frac{ 1 }{ 2 }\] 3 is the whole part and 1/2 is the fraction part

OpenStudy (rajee_sam):

the 1/2 in the above number I can express it as a decimal number. 1/2 is actually 0.5 So 3 1/2 is actually 3.5. So did you see how the whole part in the decimal number and the mixed number are the same. And the part of the number after the decimal point is what becomes the fraction.

OpenStudy (rajee_sam):

@apple69

OpenStudy (rajee_sam):

why such a lag in your response?

OpenStudy (texaschic101):

Do you know the place value of the numbers after the decimal ?

OpenStudy (anonymous):

okayy i kind of get it now ;o

OpenStudy (rajee_sam):

@texaschic101 he has not even answered the previous question. He needs to understand that first b4 we go on to that. It will be better if one of us does this. If you want to do it go ahead. I don't mind.

OpenStudy (rajee_sam):

so 87.653 we keep the 87 as it is and convert the .653 into a fraction

OpenStudy (texaschic101):

If it is on the left of the decimal, it is a whole number. If it is on the right of the decimal, then it is a fraction

OpenStudy (rajee_sam):

@apple69 I guess @texaschic101 wants to do this, so follow her cue. Good luck

OpenStudy (texaschic101):

87 is the whole number.Now lets look at .653... the 6 is in the tenths place, the 5 is in the hundredths place, and the 3 is in the thousandths place. You go by the last number...3...in the thousandths place. Therefore, the fraction is 653/1000. So your answer is 87 653/1000

OpenStudy (texaschic101):

Hey Apple69...have a good lunch ?

OpenStudy (anonymous):

@texaschic101 thanks i understand it a little better now .. do we always go by last number ? & i had a good lunch aha

OpenStudy (anonymous):

@rajee_sam thanks for helping tho i appreciate it

OpenStudy (texaschic101):

yes...you go by the last number,and whatever place value it is in, then that will be the denominator of your fraction.

OpenStudy (texaschic101):

For instance.....what would 4.5 be as a mixed number ?

OpenStudy (texaschic101):

If it is on the left of the decimal, it is a whole number.

OpenStudy (anonymous):

4 5/10 ?

OpenStudy (texaschic101):

yes...and it can be reduced to what ?

OpenStudy (anonymous):

5 ?

OpenStudy (texaschic101):

no....it can be reduced to 4 1/2.....because 5/10 reduces to 1/2. Understand ?

OpenStudy (anonymous):

yess (: !! but what is 52 243/1000 as a decimal number ?

OpenStudy (texaschic101):

Do you know how to turn a mixed number into an improper fraction ?

OpenStudy (anonymous):

show mw how

OpenStudy (anonymous):

me*

OpenStudy (texaschic101):

ok.....52 243/1000 You take the whole number (52) and multiply it by the denominator (1000) and then add that total to the numerator (243). Once you get that total, you put it over the original denominator (1000). Can you do that ?

OpenStudy (anonymous):

53,000 ?? ;o

OpenStudy (texaschic101):

no....52 x 1000 + 243, and then you put that number over 1000. Try again.

OpenStudy (anonymous):

52,243 ? is the first part right :o

OpenStudy (texaschic101):

yes......now put it over 1000

OpenStudy (texaschic101):

52,243/1000....this is an improper fraction....when the numerator is bigger then the denominator. Now you just divide 52,243 by 1000 to get your decimal. Can you do that ?

OpenStudy (anonymous):

52.243 ?

OpenStudy (texaschic101):

yes.....thats it. There is another way to do this.... 52 243/1000.....the 52 is the whole number...set it aside, and just divide 243 by 1000, which gives you .243.....now just put your whole number in front and it comes out to be 52.243. Either way you do it, you will get the same answer.

OpenStudy (anonymous):

thankss !! (: .. wat about 79/100 ? do you just divide

OpenStudy (texaschic101):

yes....79 divided by 100 and you will get your decimal

OpenStudy (anonymous):

i got decimal part now (: what about 98.809 as a mixed number

OpenStudy (texaschic101):

ok.....you know that 98 is the whole number. Now find the place value of the last number of the decimal which is what ?

OpenStudy (texaschic101):

do you need help ?

OpenStudy (anonymous):

yeah i need help

OpenStudy (texaschic101):

the place value of numbers behind the decimal is not the same as in front of the decimal. It doesn't go : ones, tens, hundreds. It goes tenths, hundreds, thousandths. Look at your decimal part : .809....the 8 is in the tenths place, the 0 is in the hundredths place and the 9 is in the thousandths place. The last number 9 is what you go by. So your mixed number is 98 809/1000. Do you understand ?

OpenStudy (anonymous):

yeah i got it (: !! i have still have more to go /: i need to do laot of work today so i can graduate with my class of 2013 cause im missing these classes ;(

OpenStudy (texaschic101):

Are you a senior ?

OpenStudy (anonymous):

yeahh i need to pass this class online cause i havent took it so they gave me online school to make up this class credits

OpenStudy (texaschic101):

I don't see how you made it through high school without knowing this stuff.

OpenStudy (texaschic101):

anymore questions ?

OpenStudy (anonymous):

i know i just forgot alot of this things .. and yeahh

OpenStudy (texaschic101):

do you need more help ?

OpenStudy (anonymous):

yess how long can you help me ?

OpenStudy (texaschic101):

I don't know....just list some questions

OpenStudy (anonymous):

7/10 as a percent ?

OpenStudy (texaschic101):

first you need to turn it into a decimal by dividing. What do you get when you divide ?

OpenStudy (anonymous):

0.7 ?

OpenStudy (texaschic101):

yes.....you can either multiply that by 100 or you can move the decimal two spaces to the right adding 0's if needed. That is how you turn a decimal into a percent.

OpenStudy (texaschic101):

So what did you get ?

OpenStudy (anonymous):

70%

OpenStudy (texaschic101):

you got it. .7 = 70%

OpenStudy (anonymous):

:) ! & if its 18/25 ? do you do the same ?

OpenStudy (texaschic101):

if your trying to turn it into a percent, then yes......you divide it and turn it into a decimal, and then multiply that by 100 to get your percent.

OpenStudy (texaschic101):

work it out and tell me what you get

OpenStudy (anonymous):

okay let me work it out

OpenStudy (anonymous):

72% ?

OpenStudy (texaschic101):

If your trying to turn a decimal to a percent, multiply the decimal by 100. If you trying to turn a percent into a decimal, divide the percent by 100.

OpenStudy (texaschic101):

72% is correct

OpenStudy (anonymous):

yess (: and is 8% as a decimal ? = 0.08 ?

OpenStudy (texaschic101):

yes it is :)

OpenStudy (texaschic101):

your catching on....good

OpenStudy (anonymous):

cause your a good tutor aha (: & is 17% as a decimal = 0.17

OpenStudy (texaschic101):

yes it is....see, your not dumb......I told you so

OpenStudy (texaschic101):

can you turn 0.17 into a fraction ? Remember the place value.

OpenStudy (anonymous):

your really good at helping (: ? & okayy do you still have time formore questions ;O ?

OpenStudy (texaschic101):

yes....ask away

OpenStudy (texaschic101):

can you answer the question I just asked you ?

OpenStudy (anonymous):

okayy ill answer your question im going to work it out

OpenStudy (texaschic101):

what place value is the 7 in ?

OpenStudy (anonymous):

tenths ?

OpenStudy (texaschic101):

try again.....the 1 is in the tenths place.....what is the 7 in ?

OpenStudy (anonymous):

hundreths ?

OpenStudy (texaschic101):

yes....so what would your fraction be ?

OpenStudy (anonymous):

17/100 ?

OpenStudy (texaschic101):

exactly :)

OpenStudy (anonymous):

^.^ ! & do i ask another question ?

OpenStudy (texaschic101):

if you want to

OpenStudy (anonymous):

do you have time ?

OpenStudy (texaschic101):

I have time

OpenStudy (anonymous):

find 82% of 70.

OpenStudy (texaschic101):

ok......Here is something you are gonna need to remember..." of " in these problems as well as word problems, means multiply. 82% of 70 = 82% x 70. First you will need to turn 82% into a decimal. Do you remember how to do that ?

OpenStudy (anonymous):

0.82 ?

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