hi this is my question:

$\displaystyle 3\frac{3}{4}$ x $\displaystyle \frac{5}{2}$

would the answer be, $\displaystyle 4\frac{7}{8}$

Printable View

- Dec 4th 2009, 07:53 AMandyboy179timesing fractions
hi this is my question:

$\displaystyle 3\frac{3}{4}$ x $\displaystyle \frac{5}{2}$

would the answer be, $\displaystyle 4\frac{7}{8}$ - Dec 4th 2009, 08:52 AMGrandad
Hello andyboy179No, but I can see how you got it: you multiplied $\displaystyle \frac34$ by $\displaystyle \frac52$ and added the result to $\displaystyle 3$.

You have to multiply the $\displaystyle 3$ by $\displaystyle \frac52$ as well. So you write $\displaystyle 3\frac34$ as a 'top-heavy' fraction first: $\displaystyle \frac{15}{4}$. Then multiply:$\displaystyle \frac{15}{4}\times\frac52=\frac{75}{8}=9\frac38$Grandad