Exercise 4 Page P3

Let's start by copying the given statement.

21 ft = 7 yd

Converting between feet (ft) and yards (yd) will involve using a conversion factor.

\frac{1 yd}{3 ft}

Multiplying

21 ft

by this conversion factor will convert it to yards.

21 ft \cdot \frac{1 yd}{3 ft}

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

\frac{2 1 ft \cdot 1 yd}{3 ft}

Cross out common factors

\frac{2 1 ft \cdot 1 yd}{3 ft}

Simplify quotient

\frac{2 1 \cdot 1 yd}{3}

Identity Property of Multiplication

\frac{2 1 yd}{3}

Calculate quotient

7 yd

To complete the given statement, we will substitute

7

into the blank space.

21 ft = 7 yd