Prealgebra 5.5e - Converting a Decimal into a Fraction

Converting Decimals to Fractions. From the Prealgebra course by Derek Owens. This course is available online at http://www.LucidEducation.com.

Category:

Education

Tags:

• Prealgebra
• Decimals
• Fractions
• Converting Decimals
• Derek Owens
• Math

[TheMrdragon555]

how do you do it with numbers before the decimal

[derekowens]

@TheMrdragon555 Good question, and I should put that in this lesson. You actually do it the exact same way, but it is helpful to see an example. Example: Convert 15.1323232... to a fraction x = 15.1323232... 100x = 1513.232323... 100x - x = 1513.232323.... - 15.13232323... 99x = 1498.1 990x = 14,981 x = 14,981 / 990 And you can check that on a calculator and it works. 14981 / 990 = 15.1313131... Hope that helps, DO

[spunkyblah]

Good video. Slight issue: like many people, you include "and" when actually saying 3-digit numbers. E.g. you said "eight-hundred AND fifty-one" for 851. But, in English, and should only be used between the whole and the part (e.g. "2 and one-half" or "2 and 5 tenths"). The number 851 should actually be said as simply "eight-hundred fifty-one".

[derekowens]

@spunkyblah Yes, you are correct. "And" is supposed to be used to indicate a decimal point. I would argue, however, that this is one of the rules that matters little if any. If you say "eight hundred fifty one" or "eight hundred and fifty one", the meaning is perfectly clear, and entirely unambiguous, either way.  Even something like "eight hundred and fifty one and a half" is clear and unambiguous, IMO.

Thanks,

DO

[RamosJulianBradley]

Thank you for creating this video because you just helped me with my math homework!!!

[spotman30]

uh...thanx

[fuirvfg]

im an 8th grader taking 9th grade math and you just helped me get up to date... thanks alot :}

[ChrisRobTV]

THANKS SO MUCH YOUR AMAZING!

[XxPinoyBroxX]

thnx, i hate ma Math teacher cause she gave me an "F" just for not following direction but just once!! and i asked her to teach it to me again but she keeps letting me down,, like she says: We already have been through this then she leaves and teached this one kid again!!!?? MAKES SENSE!!? maybe cause im ASIAN

[Justinbieber0053]

OMG THANK U! my teacher makes stuff so complicated and she talks fast.

[EMcAnDrEw1200]

thanx gt an A

[alexllorrac]

Now why do teachers gotta make this so fuckin difficult?