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Fraction Strategies.......

Added Dec 16, 2014 •

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we have been talking about fractions so let's start at the very beginning the first thing that we discussed was that fractions fractions fraction all fraction start with a hole and then you create that denominator denominator do not how many equal pieces are in the hole and then you create that numerator numerator numerator what they're asking in the whole fractions are the whole day we break them into equal pieces and then what we're asking or is whether the Shaded are the end shaded we have  added fractions with like denominators for it since we have said that five 8 plus what equals 6/8 adding fraction we have talked about the in that the answer Choice may not look just like this Edition symbol problem play it may be decomposed in a different way that still gives you the same answer for instant biscuits 2/8 + 1/8 + 3/8 equals 6 okay you know your answer is 6/8 so your choice is decomposed 6/8 + 2 - 8 + 1 + 3 which equals 6/8 so we decompose fractions adding fractions using our fraction pieces we talked about how as you go down the fractious the denominator increases but the size of each piece decrease this for instance in your mind you need to thank force and Eights denominator peace is going to be larger than 1/8 denominator peace because as you go down what you noticed is that the size or the piece of each fraction is getting smaller because you're having to take that hole and break it in two more pieces next we talked comparing fractions and we talked about drawing a picture and now even we use these fraction pieces awesome anytime we're working on Independent work when these are not available to you a picture that represents the fraction 1/2 and and what I want to know is I want you to compare me they wouldn't know which one is less than or greater than so what you do first is you with rectangles and you and I can I snap what we've learned in class that we want to cheer up to be the same size in length cheapest 3/5 4/5 1/2 are there any Woodside in 3/5  now as you can tell to me it appears that 3/5 is great 1/2 here is the problem it is hard for us to draw the fraction just like these pieces okay so what the second strategy we have discussed is comparing fractions by Chris cross multiply Chris Cross X add five and I was put it in a square just like that and then I would say 2 x 3 and I would put it in a square just like that three-fifths my picture and my cross-multiply we're right on target these are the strategies that we are using for comparing fractions if you are finding are generating an fraction  a larger equivalent fraction or a smaller equivalent fraction we had used multiplication and division tell Mike we have to first and we're making a cake but here's the problem broke lost did something with the measuring cats a first and so she has got to find equivalent fraction to make with her recipe and all she has all she have  is 6 okay so she has measuring cats in the size 6  so what's mama's going to do she's going to say okay 3 is larger so I'm going to multiply  what and here do you have to X Health what is eye hole in fraction form 3/3 four Force v v Exedra so I say to myself what times 3 gives me 6 it's true  I did know that this also has to be to I say 2 times 2 which is 4 so mama is going to put 4-6 of a cup in her recipe because she lost her phone and she only has fixes so she's going to put for 6 2/3 is equivalent to 46 let's review notice from 3 to 6 is getting larger which means to find the equivalent fraction we must multiply we're back in the kitchen and here's the deal mom have avocado brown sugar she needs to place in the cake but here's what happened the dog chewed up the 12th and all she had  hacks K all she has is a half of a cup  so is from 12 to 10 is getting smaller any operation to get smaller when we're find an equivalent fraction okay so once again I know I have to divide by whole example of housing fractions to have 3/3 how far is 12 divided by what number I'm going to change this right is 6 + 12 divided by what number is going to give me 12 / 6 which means that I have to take and divide 66 divided by 6 equals 1 612 and 1/2 are equivalent that Ralph the dog chew up the 12th measuring cup mom is still able to make her wonderful recipe because she knows 612 is equivalent to 1/2 and she found that fraction 5 equivalent fractions by dividing do you know the strategy that we had talked about so far in class just a little heads up discuss improper fraction an improper fraction is when the numerator is larger than the denominator next okay into a fraction + 5/5 what equals 12 X how do I know that 5 + 5 is 10 what is 12 * 12/5 as an improper fraction and they're going to write improper fractions and mixed number watching an NN change map it may be improper in the story  a mixed number in the question or Cameron the story and improper in the question said this is an improper fraction where your numerator is larger than your denominator the next type of fraction that we've discussed in class as well is called the mixed number fraction and it looks like that 2 + 4/5 + 4/5 not if you want it I went and I decompose one that's a whole you know that 5 equals 1 + 1 is going to be 2 + 1 + 3 is 4/5 K let's review improper fraction never on top Liberator largest members the name rater plus I fraction these are our fraction strategies

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Fraction Strategies.......

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