Lesson on Fractions

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Multiplying and Dividing Fractions
Slide 3 of 4(See index)

To multiply fractions, you have to multiply the top numbers and multiply the bottom numbers. (Find out why ).

%283%2F4%29%2A%285%2F7%29+=+%283%2A5%29%2F%284%2A7%29
%282%2F9%29%2A%281%2F4%29+=+%282%2A1%29%2F%289%2A4%29

To divide one fraction by another, you have to multiply the top number of the first one by the bottom number of the second one, and multiply the bottom number of the . (Find out why ).

%283%2F4%29%2A%285%2F7%29+=+%283%2A5%29%2F%284%2A7%29
%282%2F9%29%2A%281%2F4%29+=+%282%2A1%29%2F%289%2A4%29
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