6th Grade Math Textbook, Fundamentals

Think

1 mile 1 foot

 &KDSWHU

5-17

Think

1 yard 1 foot Customary Units of Length

1 foot (ft) 12 inches (in.)

1 yard (yd) 3 ft or 36 in.

1 mile (mi) 5280 ft or 1760 yd

Think

1 inch 1 yard

How many feet are in mile?

mi ft

• 5280 1 mi 5280 ft, so multiply by 5280.
  
  
  • Simplify.
  
  
  
  

3960

So there are 3960 feet in mile.

3

4

5280

1

1320

3

4

1

?

3

4

3

4

3

(^14) How many yards are in 90 inches?
90 in.  yd
36 in. 1 yd, so divide by 36.
Simplify.
 2
So there are 2 yards in 90 inches.
5
2
1
2
1
2
90
36
5
2
90
36
?
2
Customary Units of Weight
1 pound (lb) 16 ounces (oz)
1 ton (T) 2000 lb
Think
1 oz 1 lb
Update your skills. See page 416 XXI.
Rename Customary Units of Measure
Objective To rename customary units of length, capacity, and weight

• To compute with units of measure

A basketball court is 16 yards wide.

How many feet wide is a basketball court?

To find how many feet, rename 16 yards as feet.

You can rename units of length in the customary

measurement system by multiplying or dividing. Use

the table of equivalent units on page 439 to help you.

To rename larger units as smaller units, multiply.

To rename smaller units as larger units, divide.

16 yd  ft

16 • 3

• Rename the mixed number as a fraction.

50 Multiply. Write in simplest form.

So a basketball court is 50 feet wide.

3

1

1

50

3

1

?

(^23) 1 yd 3 ft, so multiply by 3.
2
3
2
3
2
3

Rename units of weight using the same process as you did for units of length.

How many pounds are in 60 ounces?

60 oz  lb

1 pound 16 ounces, so divide by 16.

 3

So there are 3 pounds in 60 ounces.^34

3

4

15

4

60

16

15

4

60

16

?