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Fraction Basics

Added Mar 24, 2013 •

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Quick review of fraction basics

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fraction review Basics side note I will be going to this video pretty quick it is the review not the actual first time lesson play there's something you don't understand please come to tutorials Herzing adding and subtracting fractions you must the common denominator for instance 2 and 1/4 - 1 and 1/3 you cannot subtract 1 1/3 / 1 because the denominators are different so the first ever going to have to do is find there, denominator here I pick the number that both 4 and 3 will go into start with the largest number for 4 * 1 is for 3 will not go into 4 4 * 2 is 8 3 will not go into a 4 * 3 is 12/3 will also go in at 12 so I have found my common denominator can I have to determine oh wait times will take to get from 4 to 12 my answer of course is X 3 whatever I do on the bottom I must do on the top 1 * 3 is 3 then I have to look at what does it take to get from 3 to my answer would be a * 4  Sarah doing the bottom I go back to doing the top  again once as far as for now I have the next thing now I go back and look if you'll notice what's the problem  you have 412 try to being taken away from three as you know if you only have $3 you can't expect to take for can't happen  Flagstaff you're going to have to do is to come over here and borrow from the whole number and make that a one now we have to go back and add that one over here  however you can't just put any numbers that you feel like you still have to have a common turn it up 12 but the top number has to make it to work equals the one that you borrowed from here  so determine what goes on here you simply put the same numbers back on top 12 / 12 equals 1 and it makes it compatible with a 3/12 to where it can now be added 3 + 12 is 1512 - original 412  and now we have a number we can actually work Runner whole numbers over here we have 1-1 Corvette zero 15 man or would give us 11 or common denominator 12 stays the same sex is zero you do not have to rewrite the simply comes your answer he simply most across the top  1 * 2 is 2 they also did the second on the bottom 2 * 5 is 10 now we're not quite done because this fraction would not be simplified you have to find a number that goes into both I look at the smallest number in this case instead of the largest we look at to will to go into both numbers yes it will to go into one time to go into 10 five times I will go more in a little bit of simplifying review in just one moment dividing fractions it's pretty simple that the rule is you really can't divide fractions so you have to turn it to a multiplication problem you have to multiply with reimburse  so the first thing we're going to do is reciprocal keep 3/4 the same we're not going to do any changes to it with this division sign we're going to bring found tomb of Cason sign  stop the second number has a special role that's where we're going to take the inverse of this the inverse is infraction to Simply flipping it so the way it's going to look down stead of 6/7 it's going to become 76  so we go back to the same rolls with smoke K2 oil Spa straight across three times 7 is 20 1/4 * 6 is 24 and we see if there is a number that will go into bow not looking at my numbers here I look through and see if there's a number that will go into both 03 will go into both so 3 will go into 21 7 x + 3 we're going to 28 8 x - 7/8 is simplified there's my final answer now and changing mixed numbers to improper fractions is very simple one now the roles you simply multiply down and you add up  2 * 4 is 8/8 + is 11 so again two times for I would have an eight  then I will need to go in and add a 3-2 that to make it 11 you put it back over the same common denominator and there's your improper fraction that is simplifying fractions as I said I'd come back and review the turn quickly you simply find the factors of both sets of numbers in this case you have six and eight the factors that go into 6 would be one two  3 + 6 1 x 6 equals 6 + 2 * 3 equals 6 the factors I went to 8 would be one  two 4  NX  1 times 8 equals 8 2 times 4 equals 8  largest number that I can see that goes into both would be right here at the tooth  go back member I'm going to have to use to simplify out  so we're going to six three times to go into the eight four times simplified 6/8 becomes 3  an improper fraction back to a mixed number  found this case we're going to find out what time's the bottom number will go into the top six we're going to 28 four times before becomes our whole number we know we're going to have the same common we can leave that alone now I look at four times six these two numbers right here multiply to each other and I know that's 24 when I go back and take play porkness 28 I know I have for leftover so I need to put that but now we're in a situation to where it's not simplified so again I need play Spotify I find a number that goes into both which would be to 2 goes into 42 times 2 goes into 6 three times there's my final mix simplify  get it there's any questions you're having with you since I did go quick and you still not understanding if you didn't get the refresh not a problem just come see me or either in class after I go over the lesson are in 12 times

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Fraction Basics

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