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Topic 10.4 and 10.5 Subtracting Mixed Fractions

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Here is a video for subtracting fraction when borrowing is required. I showed the class three ways to practice and should do their homework all three ways if borrowing is needed. However, least common multiples (LCM) are required to find the least common denominator (LCD). Be sure to use the structure here as well.

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all right this would work on the class today for sub-123 zastapic 10 subtracting fractions where they may need to borrow that me not really depends on the three ways to do it so I gave him this fraction ready to practice before lunch after lunch all three ways so if you just want to go over what I expect from them so if stuck here's your shovel to dig themselves out of trouble do you think you could fix up uncover so I need to go over here and rewrite him so I didn't notice today this some kids would switch these around when you write fractions like this this right here is a menu and it is the main fraction or the unit itself that you're taken something away from so you have to keep it first all the time so I'm just going to go for + 1/3 -1 3/4 all right away I see that I have different denominators are unlike Leslie I need to use LCM some ago over here and do lcms free enforce imma go 3 inform so my goal is to find the least common multiple of 3 6 9 12 Brighten screen for 2012. They're just in case something smaller Bellaire pop up to well looks like 12 is a common multiple of the two there for my LLC d least common denominator set an alarm at my structure in the movie Casino there I'm going to write a fraction bar imma make sure the arrow from a forgotten smaller cuz I put that after work so I moved my four-wheeler I put an arrow to make sure tries to remind me to leave here it's all right here so the three times for 12 to keep this fraction equivalent with this one I got to do the same to the numerator so 3 * 4 is 12 and 1 * 4 is 4 of 412 of 4 + 4/12 is equivalent to 4 1/3 I go down hit it once before I go for * 3 is 12 so three times. So what is it I'm at the orange cuz I like citrus so now we go for tickly 1 or 4 - 1 is 3 4 - mini kids and people think you can't do that but you really can for positive and 9 + negative negative although that's a quick answer we need to have our answers as positive fractions are negative for we're going to borrow with green from the three and make it to 12 since my dad I search for 12 if it comes at 2 but so far apart is this right here supposed to represent three holes and just looks different now let's crack or - 5/12 and then I put that you got to go that way and then 12 is 7 in tune switch roles and that your final answer if they have to simplify it that means or wrong so if they do the writing will see him to get the least common multiple they should never have to simplify the fraction for the most part so that's using negative types regrouping all the structures since it's already done I'm just going to be right before 12 -1 + 912 there is a similarity from this to this anyway and what Imma do is am I borrow from this for and make that at 3 but my one I borrow cash is 12 so my 1/1 is this converted from a whole number can I add them together so it's going to be from a rerun my 3/4 + 12 + 4 is 16 and then I just go X now stretch out my three take me one or three naked one is 260 - 9 is all stays the same answer that's a positive thing that's a good sign right there so that's what we're looking for improper fraction is the one that's going to require more work for students to do and we find a fun color Avenue. Sky blue so I'm going to do the structure again but I will write for in 412 -1 + 9 + 12 can I go ahead and do this so my goal is it raining at the improper fractions about doing that you got to take the whole number multiplied by The dni Manor how many pieces of ticks make a hole in the sport after hours is 4 * 1248 + 4 + 52 so it's actually 52 / 12 and then 1 * 12 is 1212 + 9 21 so it's 21 over 12 get your negative sign there is 1 + 31 / 12 2 and since 12 x 24 7 out of 12 answer there are the three ways we did in class and they should be able to do at home for a rebar or borrowing fracture

Uploaded by Brian Gumm.

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Topic 10.4 and 10.5 Subtracting Mixed Fractions

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