Exercise 49 Page 264

If we know how many ounces of chocolate chips are needed for $1$ dozen muffins, we can determine how many ounces of chocolate chips Allie needs for $8$ dozen muffins by multiplying this number by $8 .$

$1$ dozen muffins

The recipe she is using makes

3

dozen muffins and requires

16

ounces of chocolate chips. Therefore, to find the number of ounces she need for

1

dozen muffins, we have to divide the

16

ounces by

3 .

\frac{1 6 ounces}{3}

$8$ dozen muffins

Now we multiply the number of chocolate chips per dozen muffins by

8

to obtain how much is required for

8

dozen muffins.

8 \cdot \frac{1 6}{3}

MoveLeftFacToNum

$a \cdot \frac{b}{c} = \frac{a \cdot b}{c}$

\frac{8 \cdot 1 6}{3}

Multiply

\frac{1 2 8}{3}

UseCalc

Use a calculator

42.66666 \dots

RoundInt

Round to nearest integer

\approx 43

Allie needs

43

ounces of chocolate chips to make

8

dozens of muffins.