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    2 3/4 x 1 5/7
    how to multiply fractions?
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    (Original post by Vickylucz)
    2 3/4 x 1 5/7
    how to multiply fractions?
    First convert them to improper fractions then multiply the numerators by each other and then the denominators.

    Post your working if you get stuck.
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    (Original post by notnek)
    First convert them to mixed numbers then multiply the numerators by each other and then the denominators.

    Post your working if you get stuck.
    But how? do you do 2x3=6 2x4=8 = 6/8
    1x5=5 1x7=7 =5/7
    and then 6x5= 30 7x8=56
    =30/56 but you have to write as a mixed number in it's simplest form
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    (Original post by Vickylucz)
    ...
    \displaystyle 3 \frac{4}{5}=\frac{19}{5} for example.

    Multiply the integer (whole number) by the denominator (bottom) and add the numerator (top) to get the number on the top of the improper fraction.
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    (Original post by Vickylucz)
    But how? do you do 2x3=6 2x4=8 = 6/8
    1x5=5 1x7=7 =5/7
    and then 6x5= 30 7x8=56
    =30/56 but you have to write as a mixed number in it's simplest form
    Sorry I made an error in my last post.

    The first step is to convert the mixed numbers to improper fractions. Can you try that?
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    (Original post by Vickylucz)
    2 3/4 x 1 5/7
    how to multiply fractions?
    You need to know first that to multiply fractions you multiply tops and bottoms separately e.g.

    \frac{3}{4} \times \frac{7}{11} = \frac{3 \times 7}{4 \times 11} = \frac{21}{44}

    But you need to convert to top-heavy fractions first, in your case. To get an improper/top-heavy fraction note that:

    2\frac{3}{4} = 2+\frac{3}{4} = (2 \times 1) + \frac{3}{4} = (\frac{2}{1} \times \frac{4}{4}) + \frac{3}{4} = \frac{2 \times 4}{1 \times 4} + \frac{3}{4} = \cdots
 
 
 
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