Exercise 72 Page 56

We want to convert 2mi to feet. Since there are 5280 feet in 1 mile, we have the following conversion factor. 5280 ft/1 mi Multiplying 2 mi by this conversion factor will convert it to feet.

2 mi* 5280 ft/1 mi

MoveLeftFacToNum

a*b/c= a* b/c

2 mi * 5280 ft/1 mi

CrossCommonFac

Cross out common factors

2 mi* 5280ft/1 mi

SimpQuot

Simplify quotient

2 * 5280 ft/1

DivByOne

a/1=a

2 * 5280 ft

Multiply

Multiply

10560 ft