1. Estimating Length and Area
COURSE 2 LESSON 8-1
Choose an appropriate customary unit of length for estimating each measurement.
a. an automobile
An appropriate measure is feet. The length of an automobile is much less than a mile, but much greater than an inch.
b. a computer keyboard
An appropriate measure is inches. The length of a computer keyboard is less than a yard.
8-1

2. Estimating Length and Area
COURSE 2 LESSON 8-1
Choose a reasonable estimate for the perimeter of a piece of paper: 40 in. or 40 ft.
The edges of a piece of paper would be measured in inches.
So 40 in. is the better estimate.
8-1