Title: Lesson 6-7
Author: mark_cameron
Last saved by: MHE
Company: McGraw-Hill

Lesson 7-3

Example 1 Convert Larger Units to Smaller Units
Convert 6 yards into feet.

Since 1 yard = 3 feet, the unit ratio is .
6 yd = 6 yd 		Multiply by the unit ratio.
         = 6 ⋅ 3 ft or 18 ft		Divide out common units and multiply.
	
So, 6 yards = 18 feet.

Example 2 Convert Larger Units to Smaller Units
HIKING   Max is planning a hike which will cover  of a mile.  How long is the hike in feet?

1 mile = 5,280 feet

             = 3300 ft		

So, the hike is 3,300 feet long.

Example 3 Convert Smaller Units to Larger Units
Convert 64 ounces into pounds.

Since 1 pound = 16 ounces, the unit ratio is , and its reciprocal is .

64 oz = 64 oz 		Multiply by the reciprocal of the unit ratio.
          = 4 lb			Divide out common units, leaving the desired unit, pounds.

So, 64 ounces = 4 pounds.

Example 4
WOODWORKING  Michael needs 7 feet of plywood for his woodworking project.  How many yards of plywood does he need?

	Since 1 yard = 3 feet, multiply by the unit ratio.  Then, divide out the common units.
           = 	Write the mixed number as an improper fraction.  Then divide out the common factors.
          = 	Multiply.

So, Michael needs 2 yards of plywood.

Example 5
FOOD  A turkey breast weighing 5 pounds is cut into 10 pieces of equal weight.  How many ounces does each piece weigh?

Begin by converting 5 pounds to ounces.

5 lb = 5 lb 
       = 80 oz

Find the unit rate which gives the number of ounces per piece of turkey breast.

 or 8 ounces per piece of turkey breast

So, each piece of the turkey breast weighs 8 ounces.