A few days ago
Anonymous

I NEED HELP TURNING REAPETED DECIMALS INTO FRACTIONS….

FOR EXAMPLE?

a) 0.38

b.) 0.61

c.) 0.5

I DONT KNOW HOW TO PUT THE LINE OVER THE NUMBERS TO SIGNIFY THE RECURRING NUMBER SORRY

THANKS

A few days ago
drew c

I could go into detail explaining it to you, but instead Im going to point you to another website that explains it very well. First, put in the decimal, and if it is a repeating decimal just put the repeating number(s) a few extra times. Then the website will explain to you exactly how to do it.

Hope this helps!

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A few days ago
chocolateman
Round off the number, for example 0.3838383838 becomes 0.38 or 0.384 depending how many number you want. So if you want just 2 decimal places get to the third number in this case 0.383 so 3 is the third number, if it is below 5 you leave the 8 as an 8, if the third number is above 5 eg 0.386 then you turn the 8 into a nine so it becomes 0.39. then however many number there are so in this case 0.38 there a two decimals so you use two zeros, it becomes 38 over 100 then you can half it to 19 over 50, I don’t know if this is the answer you wanted but I hope it helped
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A few days ago
nicknameyo
Anytime you want a repeating decimal in fraction form, put the digits over the same amount of nines.

For example

a) 38/99

b) 61/99

c) 5/9

If you wanted to do .04040404 repeating, it would be 4/99

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A few days ago
Anonymous
i’m going to assume that the decimals are as follows:

a) 0.38888…

b)0.61111…

c)0.55555… i know that any single digit that repeats is that digit divided by 9. (you can expand this to say that any 2 digits that repeat are those two digits divided by 99, any 3 are divided by 999…. so on. this is a phenomenon caused by our base ten numbering system and it is always true, so just live with it and learn to exploit it)

for a) and b), this is how i figured them out:

i attempt to reassemble the numbers from the fact that 1/9=.1111… and 8/9=.8888…

let’s take .38888…

if you were to multiply by 10 you would get 3.88888…

now you can subtract 3 from this answer to get .88888…

and you know that .8888…=8/9

so (.8888…+3)/10=.38888…

or (8/9+3)/10=.38888…

follow order of operations to get just a fraction on the left side…

(8/9+27/9)/10=(35/9)/10= 35/90

the problem is that this is not in lowest terms…so divide numerator and denominator by 5

(35/5)/(90/5)=7/18

check this on your calculator by dividing 7/18 😀

keep in mind that your calculator will round the final digit.

————————————————————————

the other trick where you multiply by a factor of 10 to the repeated digit only works if all the digits repeat.

.383838…=x declare x equals your value

38.3838…=100x multiply by 10 until one set of your repeatded numbers are to the left of the decimal

38.3838… -x =100x-x subtract x from both sides

38=99x solve for x

x=38/99

actually, my favorite is this one:

.999…=x

9.999…=10x

9.999… -x = 10x -x

9=9x

x=1 how cool is that?

first we said that x=.999…, but we just proved that x=1!

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A few days ago
Anonymous
Hey don’t worry about it. In the real world you’ll never be doing any of that. Not to be disrespectful to the educational system but they really don’t teach you what you really need to know in the real world.

When you get out of school you’ll find everybody uses calculators and computers. When I was in school I used to really try to get straight A’s and I did but when I got out of school I realized what a joke our educational system was.

It’s really just to indoctrinate our kids into thinking they came from monkeys. he he. But seriously, its a Godless educational system thats been ranked one of the lowest achieving in the world.

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A few days ago
Girl
okay put the line over the reacurrin number i cant do it on this computer but can you see it?? its like 8_ but the lien is one the 8 and its on top of the 8
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A few days ago
Lindastar14
well for 0.38 just like put a dash over the 8 to incicate the repetition
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A few days ago
Clayton J

A)19/50

B)61/100

C)1/2

Google how to properly figure these numbers, I just did them in my head.

GOOD LUCK!

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A few days ago
?
you could use “…”

a.) .38=38/100=19/50

b.) .61=61/100

c.) .d=1/2

just change it (._=_/10;.__=__/100;.___=___/10000 and then simplify with gcf (greastest common factor [divisor {biggest number you can divide both by}])

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A few days ago
Anonymous
A IS DECIMAL 38 AND SO ON
0