I HATE MATH., it sucks |
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 Feb 19 2006, 01:17 PM
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#1
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rawrrrr.  Group: Member Posts: 41 Joined: Jan 2005 Member No: 78,847  |
who can tell meeeeee
what 0.345 with the 45 repeating is as a fraction? please answerrrrrrrr |
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Feb 19 2006, 01:20 PM
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#2
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 白人看不懂 !!!! Group: Member Posts: 3,838 Joined: Aug 2004 Member No: 40,824 |
moved to school subforum.
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Feb 19 2006, 01:39 PM
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#3
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 dakishimetainoni... Group: Staff Alumni Posts: 4,322 Joined: Dec 2004 Member No: 75,318 |
don't you have a scientific calculator? they all have the fraction to decimal and decimal to fraction function don't they...?
ugh i can't find an interactive calculator that can do that fraction <-> decimal crap and it's not really giving you an answer...but this should hep you (i think you should keep repeating the 45 when converting or whatever, i'm not sure because i'm too lazy to go get my own calculator) |
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Feb 19 2006, 03:08 PM
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#4
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 Senior Member Group: Member Posts: 979 Joined: Aug 2005 Member No: 205,020 |
19/55 (TI-83+, .3454545454545454545 math, frac, enter) took a total of about 5 seconds.
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| *mipadi* |
Feb 19 2006, 03:23 PM
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#5
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Guest |
QUOTE(je like french @ Feb 19 2006, 3:08 PM)  19/55 (TI-83+, .3454545454545454545 math, frac, enter) took a total of about 5 seconds. Maybe the original poster didn't know how to use those functions? |
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Feb 19 2006, 03:31 PM
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#6
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 *~Katie*~ Group: Member Posts: 761 Joined: Jun 2004 Member No: 25,517 |
agreed. math is my worst subject
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Feb 19 2006, 04:22 PM
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#7
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 in a matter of time Group: Staff Alumni Posts: 7,151 Joined: Aug 2005 Member No: 191,357 |
You can do it by hand, too.
First look at the repeating digits; there are two of them. Then you multiply the number by 10 to the power of how many repeating digits there are. Since there are two repeating digits, do 10^2, which is 100. Let N be the repeating number. 100N = 34.54545454545454545454.... N = 0.34545454545454545454.... Now subtract the two.  ^ You can see that the repeating 5's and 4's get cancelled out. If you put 342/990 into simplest terms, you get 19/55. There you go. =] |
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