# A recipe for cookies calls for 3 1/4 cups of sugar. Amy has already put in twenty 1/9 cups. How many more cups does she need to put in?

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May 18, 2017

$1 \frac{1}{36}$ cups to be added.

#### Explanation:

take 20 multiply by $\frac{1}{9}$
$20 \times \frac{1}{9} = \frac{20 \times 1}{9}$

=$\frac{20}{9}$

Then we change $3 \frac{1}{4}$ into a improper fraction
It gives us $\frac{13}{4}$

First we change the fractions to the same denominator.
Then we subtract them.

$\frac{13}{4} - \frac{20}{9}$

$= \frac{117}{36} - \frac{80}{36}$

=$\frac{37}{36}$

=$1 \frac{1}{36}$

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