How do you find equivalent fractions? I know that you need to multiply, for example if you want an equivalent to 3/5 you would multiply by 5 to get 15/25, I just know that - so how do I explain it to my daughter?
I am terrible with math!
PS:: anyone else having trouble with their keyboard when typing on mammapedia?
I know that they=the same thing but, how do you decie what number to multiply both numbes by?
OH - I got it first divide then multiply - Thanks
They equal the same thing?
Nope
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I swear I don't mean that in a flip way, that is what they want them to learn. So 1 3/4 is the same as 7/4, ya know? My daughter is pulling her hair out teaching pre algebra because the kids don't get all combine like terms mean is if it has an x behind it add it together. I think people over think math.
Maff is stoopit.
:(
Hi there
a GREAT free math website is KHANACADEMY.ORG << it's great b/c it gives you problems to do and then if you are still stuck, you can listen to examples.. give it a try. I love the site!
I'm not really following your post....
If you multiply 3/5 times 5, you don't get 15/25. What you do get is 15/5, which is 3.
If you multiply 3/5 times 1, then you get an equivalent fraction. 1 can be anything you want it to be... 1/1, 2/2, 3/3, 976/976... they all are equal to 1.
Can you give an example of what you are actually trying to do? An equivalent fraction to 3/5 might be 15/25, but you don't get there by multiplying 3/5 by 5. You get there by multiplying by 5/5 (which is just multiplying by 1).
ETA: I saw someone else mentioned Khan Academy... it IS a good site. Here is a link to it specifically for equivalent fractions:
http://www.khanacademy.org/math/arithmetic/fractions/v/eq...
Hi L.,
You and your child can go to the big y homework helpline. You get a live online teacher. You make up a username, pick your childs grade, then pick a subject. It's a wonderful resource that my son and I can't do without. I think it's only available from 4pm - 7pm EST.
They will break things down for the child to understand and the parent. I think it goes up to 12th grade.
Hopes this helps and have a great weekend! :)
I STILL don't get it. I HATE math too. Luckily I have college nieces and nephew to help my GD!
You can pick any number you want unless the teacher designates what the numberator or denominator are to be. I agree with Victoria' post. The Kahn Academy is free and has lots of free video lessons on math. The speed of the lessons are perfect too. Not too slow that you fall asleep, but not so fast that you can't understand it. The main concept she needs to learn first is what 1 is in terms of fractions. It's quite simple. 1 is a whole. If you have a pie and divide it into 4ths you would have 4 pieces, which would be writen in fraction form as 4/4, but you still have 1 whole pie since all the slices are still there. If you cut the pie into 8 slices it would be 8/8 and so on. To find equivalent fractions you just multiply the fraction by 1 whole, since anything multiplied by 1 is always itself. (Ex: 1X2=2, 1X100=100) 1 never changes the value of anything. This means that you can pick any number your heart desires as long as you keep it a whole. Say I give you 2/3. I want an equivalent fraction...any one you want to give me is fine. You could say you like the number 2, so you have to mulitply both the top and bottom by 2 so you don't change the value; because you need a whole. It would be 2/3 X 2/2 = 4/6, since 2/2 = 1 and 1 won't change the value.
Now you can get more difficult by making the question more difficult. I'll give you the fraction 4/5, but I want an equivalent fraction with 25 as the denominator. (numberator on top/denominator on bottom) In this case you have to think 5 X what = 25....5X5=25, therefore the fraction would be 4/5 X 5/5 = 20/25. I have to have an equivalent fraction, so I have to multiply by 1 or 5/5.
