Watch Video on Subtracting Mixed Numbers - Pre Algebra Help
Access full lesson containing this video at: http://www.yourteacher.com/prealgebra/subtractingmixednumbers.php Students learn to subtract mixed numbers by first subtracting the fractions, then subtracting the whole numbers. For example, to subtract 6 1/3 - 4 2/3, first subtract 1/3 � 2/3. However, notice that 1/3 � 2/3 equals a negative fraction. In this situation, the first fraction, 6 1/3, can be rewritten as 5 + 1 1/3, or 5 + 4/3, or 5 4/3. Therefore, the original problem, 6 1/3 - 4 2/3, can be rewritten as 5 4/3 - 4 2/3. Now, subtract the fractions, 4/3 � 2/3, to get 2/3, and subtract the whole numbers, 5 �4, to get 1. So 5 4/3 - 4 2/3 = 1 2/3. Note that some of the problems in this lesson also require the student to find a common denominator for the fractions. For example, 8 5/16 - 1 1/8.
Duration : 0:1:35
[youtube sIPGOzyTpbY]
Tags: fractions, math, mixed, numbers, subtract, subtracting, subtraction
June 21st, 2009 at 9:25 pm
yes i think is …
yes i think is easier to convert them to improper fractions, but it can also be don this way
i’m gonna turn into EINSTEIN from watching this videos hehe
math is science and i love it!
June 21st, 2009 at 9:25 pm
what in ?? she …
what in ?? she has an idiotic way of teaching
June 21st, 2009 at 9:25 pm
agreed, much easier …
agreed, much easier way.
June 21st, 2009 at 9:25 pm
Ive got my own way …
Ive got my own way of working this out. =)
June 21st, 2009 at 9:25 pm
Ur welcome glad i …
Ur welcome glad i could help.
June 21st, 2009 at 9:25 pm
thank you so much!! …
thank you so much!!!! so much easier your way
June 21st, 2009 at 9:25 pm
bad video
bad video
June 21st, 2009 at 9:25 pm
wat? its easier to …
wat? its easier to convert them to improper fractions than subtract. 10 1/3 is 31/3 and 5 2/3 is 17/3 …so 31/3 - 17/3 = 14/3 = 4 2/3 seeee much easier
June 21st, 2009 at 9:25 pm
Noo you have to …
Noo you have to reduce both numbers not just one :p
June 21st, 2009 at 9:25 pm
how the you …
how the you got 9 4/3?? can you explain how you got 10 1/3 going to 9 4/3 ??
June 21st, 2009 at 9:25 pm
wtf?
wtf?
June 21st, 2009 at 9:25 pm
reducing it to its …
reducing it to its lowest terms 1 1/3 u can reduce that to 4/3 since 1 is a whole number, its all about reducing dude.
June 21st, 2009 at 9:25 pm
where she get 9 4/3 …
where she get 9 4/3 from?
June 21st, 2009 at 9:25 pm
got it thanx
got it thanx
June 21st, 2009 at 9:25 pm
man does that girl …
man does that girl need to get laid
June 21st, 2009 at 9:25 pm
never so it done …
never so it done that way,very interesting
I’ve always been taught to convert to improper and rewrite when you get done
June 21st, 2009 at 9:25 pm
Im confuse at when …
Im confuse at when she re-writes the 10 1/3?
June 21st, 2009 at 9:25 pm
yeah FKIN
yeah FKIN
June 21st, 2009 at 9:25 pm
this is the worst …
this is the worst teacher ever. She just wrote 9 and four thirds w/out even explaining how she got there. How is a kid supposed to understand if the purpose of watching these video’s is to learn what they’ve missed or didn’t understand.
June 21st, 2009 at 9:25 pm
stop drawing squares
stop drawing squares
June 21st, 2009 at 9:25 pm
yeh my problem is …
yeh my problem is like this but my denominators are mixed numbers
June 21st, 2009 at 9:25 pm
i dont get it
i dont get it
June 21st, 2009 at 9:25 pm
I finally get. My …
I finally get. My math teacher couldn’t clearly tell me how to do the thing but this so much more clear.
June 21st, 2009 at 9:25 pm
or you guys could …
or you guys could just buy the texas instrument XI30 multiview…. it does these kinds of problems easy
June 21st, 2009 at 9:25 pm
sweet teacher
sweet teacher