1. Measurement

2. Length 12 inches (in.) = 1 foot (ft) 3 feet = 1 yard (yd)
Linear Units of Measure: The English System
12 inches (in.) = 1 foot (ft)
3 feet = 1 yard (yd)
36 inches = 1 yard
5280 feet = 1 mile (mi)

3. About how big is each?
Inch –
Foot –
Yard –
Mile -

4. Converting Units Convert: 40 inches to feet Solution:
b. 13,200 feet to miles

5. About how big are these things?
a little longer than a yard stick
half a mile
width of a paper clip little
width of a hair
Millimeter
Centimeter
Meter
Kilometer

6. Commonly Used Units of Linear Measure in the Metric System
The basic units for measure in the metric system are the meter, liter, and gram.
Symbol
Unit
Meaning km
kilometer
1000 meters hm
hectometer
100 meters
dam
dekameter
10 meters
m, l, or g
meter, liter, gram
1 meter dm
decimeter
0.1 meter cm
centimeter
0.01 meter mm
millimeter
0.001 meter

7. Changing Units Within the Metric System
To change from larger units to smaller units involves multiplying by ten (move your decimal to the right).
To change from smaller units to larger units involves dividing by ten (move your decimal to the left).
Remember this???
King Henry Doesn’t Usually Drink Chocolate Milk

8. Changing Units Within the Metric System
Convert meters to kilometers.
Convert 27 meters to centimeters

9. Using Dimensional Analysis to Change To and From the Metric System
Approximate English and Metric Equivalents
1 inch (in.) = 2.54 centimeters (cm)
1 foot (ft) = centimeters (cm)
1 yard (yd) ≈ 0.9 meter (m)
1 mile (mi) ≈ 1.6 kilometers (km)

10. Using Dimensional Analysis to Change to and from the Metric System
Convert 125 miles to kilometers
Convert 2,680 centimeters to inches.