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Diving hard fractions?

I have a really hard problem with fractions does anyone have any advice?

  • my grade average is droping because I just don't understand anything about fractions................and I just cannot wait till I get to dividing them when I can barely add and subtract them

  • Answer:

    Well, while the first answer is right, that probably doesn't answer your question if you're struggling. I could try to explain, but your best bet would be face-to-face, one-on-one tutoring. Most teachers (I stress MOST) are really understanding and really WANT you to learn. They will usually stay after or come before school to meet with you to help. If your math teacher won't do this, ask your counselor (not a math teacher, I know, but surely has been to college and had to take math courses). Just tell them your situation, and stress to them that you really WANT to learn it. Once you get the basic understanding, they're not that bad. Good luck, sugar. ******** PS Jedi's answer is along the right track, but 2/3 is NOT the same as 2/9... You have to take your denominator (the bottom number) and figure how many times it goes into 9. That would be three times. NOW you have to take that 3 and multiply it by the numerator also (the top number)... which would give you six (2 x 3) Like this (keep in mind that 3/3 is the same as 1, so when you multiply 3/3 by something, you're not changing the value of the first number, only the way it looks)... 2/3 x 3/3 multiply across; 2 x 3 = 6 3 x 3 = 9 now you have 6/9, and since the bottom number is the same now as your 8/9 in the problem, you can subtract it from the 8/9. 8/9 - 6/9 = 2/9 Get it?

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find a common denominator

planostarsfan

OK This may sound crazy, but bare with me. Think of money. If you have 50 per cent of a dollar, you have a 1/2 dollar. If you have 25 per cent you have 1/4. If you have 10 per cent, you have 1/10 or a dime. Now look at a tape measure. (You have to visualize this and a tape measure or ruler will help.) Now, you can't add or subtact a fraction unless the bottom number is the same. So you have to change it to make it the same. So 1/2 is the same as 50/100 or 4/8 or 8/16, 1/4 is the same as 25/100, or 2/8 or 4/16, etc. With multiplication and division, you don't have to change anything, so sometimes it's easier than adding and subtracting. Hope this helps.

beentheredonethat

Example 8/9 - 2/3 The common demonitar (I can't spell it) is the first one of the two bottom numbers that are the same. The threes chart goes like 3, 6, 9, 12, 15, ect. The nines goes like 9, 18, 27, 36, ect. The first number that is the same in the two charts is the mumber that you are going to use. That is nine, the one that appears in both charts. We have to change it to this. 8/9 - 2/9 Now we're going to take the nine from the first problem on the left from the bottom. 9 goes into 9, 1 time, and 1 times 8 equals 8. Now we take the 3 from the problem on the top. 3 goes into 9, 3 times, and 3 times 2 is 6. So it will look like this 8/9 - 2/9 8 minus 2 is 6, so it's 6/9 All you have to do is find one number that both of the digits on the bottom appear in, when you count them. Say if you are trying to find a number in the fives, and the eights. 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ect, is all of the fives. All of the eights are 8, 16, 24, 32, 40, 48, ect. The first number that appears in both of the charts, is the one you change the bottom number to. Then you have to take the bottom number in the problem that you had at first, and divide into the number that you have on the bottom of your new fraction, the one after you found that number in the charts. Then you multiply it by the top number. Same goes for addition, only say if it turned out to be 35/20. Then you would have to put 1 and 15/20. The 1 is the whole number, 20. Then you have 15 left over. so you would make it 1 and 15/20, or 1 and 3/4. Hope this helps!

JediKnight

When you have fractions, you can always multiply by the least common denominator to clear the fraction. Actually adding and subtracting fractions is much harder than multiplying and dividing.

Jon's Mom

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