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gloria23 · Oct 19, 2006, 07:37 PM

mutiply 8/10 x 8/20
mutiply 4/8 x 5/12
mutiply 3/6 x 8/9

Bobbo_the_Beggar · Oct 19, 2006, 08:18 PM

8/25
5/24
4/9

LUNAGODDESS · Oct 20, 2006, 03:22 PM

The first thing you do is find the common denominator... 10 divided into 20 is 2 and then 2times 10 is 20... so the common denominator is 20... now you work with the numerators 2 times 8 equal 16 and the problem looks like this 16/20 * 8/20= (16*8)/(20)=128/20 then you divide 20 into 128 and you will get a reminder of 8 the answer is [B]6 8/20 [/B]and reduce or simplify 6 2/5

pikkulintu · Oct 21, 2006, 05:05 AM

When you multiply fractions, all you do is multiply the numerators together, and the denominators together, then simplify.

numerator
denominator

So:

8 x 8
10 20

8x8
10x20

64 Then simplify.
200

64/200 Divide both numerator and denominator by 2.
32/100 Repeat.
16/50 Repeat
8/25 Cannot simplify any more, so that's the answer :]

&& you just do the same for the other multiplying fractions.

LUNAGODDESS · Oct 21, 2006, 11:06 AM

Pikkulintu... re read... find the common denominator in the beginning... there is an error... if your are multiplying the number... it should be higher than the problem not closely equal too the problem...

Kyo_of_Dir_en_grey · Nov 1, 2006, 05:39 PM

With simple numbers like that you can always just cross multiply and then reduce. So it would be something like 8*20 and then 8*10 and then redues the fraction to lowest terms.

s_cianci · Nov 1, 2006, 08:53 PM

Originally Posted by gloria23

mutiply 8/10 x 8/20
mutiply 4/8 x 5/12
mutiply 3/6 x 8/9

8/25
5/24
4/9

LUNAGODDESS · Nov 2, 2006, 09:43 AM

OK you are right been in logic to long... need to revisit basics...

im my own enemy · Nov 15, 2006, 10:30 PM

I agree with pikkulintu. Just multiply straight across and simplify

LUNAGODDESS · Nov 16, 2006, 07:47 AM

How many times do I have to say I f888up

worthbeads · Nov 16, 2006, 03:51 PM

You know gloria, you could have asked for help, rather than demanding it.

kellyannl · Feb 10, 2009, 09:51 AM

4/5 x 11/6=

galactus · Feb 10, 2009, 10:13 AM

multiply $\frac{8}{10}\cdot \frac{8}{20}$

What seems to be your difficulty. Multiplying or dividing fractions is easier than adding or subtracting. All you have to do is multiply right across. But first, it may help to reduce.

$\frac{\not{8}^{4}}{\not{10}_{5}}\cdot \frac{\not{8}^{2}}{\not{20}_{5}}$

$\frac{8}{10}=\frac{4}{5} \;\ and \;\ \frac{8}{20}=\frac{2}{5}$

$\frac{4}{5}\cdot \frac{2}{5}=\frac{8}{25}$

Or you can multiply first and then reduce. Doesn't matter.

$\frac{8}{10}\cdot \frac{8}{20}=\frac{64}{200}=\frac{32}{100}=\frac{1 6}{50}=\frac{8}{25}$

See there?

Now, you try the other two.

EDIT: I just noticed that thread is over two years old. My bad for not paying

attention, but why would anyone resurrect this old thread instead of starting their own?

How did they manage to find it? KellyAnn, proceed with your problem the way I just

outlined.

kikidavis2005 · Feb 16, 2009, 05:10 PM

8 x 8=64
10 20=200

64 Then simplify.
200

64/200 Divide both numerator and denominator by 2.
32/100 Repeat.
16/50 Repeat
8/25 Cannot simplify any more, so that's the answer :]

&& you just do the same for the other multiplying fractions.