Weight and the Conversion of Customary Units

Converting Customary Units of Weight

Remember

When we convert units of measurement we can use a customary unit study guide. When you're renaming a smaller unit to a larger unit you divide. When you're renaming a larger unit to smaller unit you multiply.

If I ask you to convert 4 pounds into ounces what would the answer be? Before you begin solving your problem ask yourself this- Am a going large to smaller unit or to a small to larger unit to determine if you're going to multiply or divide.

4 pounds = ____ ounces

Because pounds into ounces is larger to smaller unit, I am going to multiply. Therefore, 4 x 16 = 64

4 pounds = 64 ounces

Let's Try Another..

Now let's try pounds to tons. REMEMBER ask yourself " Am a going large to smaller unit or small to larger unit to determine if you're going to multiply or divide.

Poll

Now let's try ounces to cups. REMEMBER ask yourself " Am a going large to smaller unit or small to larger unit to determine if you're going to multiply or divide.

• Multiply

• Divide

Now let's figure it out...

Now let's try pounds to tons. REMEMBER ask yourself " Am I going large to smaller unit or small to larger unit to determine if you're going to multiply or divide.

6,000 pounds = _____ tons

Because pounds are smaller than tons I'm going to have to follow the small to large rule and divide 6,000 pounds by 2,000 because there are 2,000 pounds in each ton.

6,000 pounds = 3 tons

because 6,000/2,000 = 3

Multiple Choice

8. Rename. 5 lbs= _____ ounces

**Think small to large - divide; large- to small multiply.

There are 16 ounces in a pound.

• 5

• 16

• 80

• 40

Multiple Choice

9. 2 tons= ______ lbs

**Think small to large - divide; large- to small multiply. There are 2000 lbs in a ton.

• 2,000

• 8,000

• 4,000

• 40,000

Multiple Choice

10. Rename. 48 ozs = _____lbs

**Think small to large - divide; large- to small multiply. There are 16 ozs in a cup.

• 3

• 30

• 5

• 144

Multiple Choice

11. Rename. 8,000 lbs = _____ tons

**Think small to large - divide; large- to small multiply. There are 2,000 pounds in a ton.

• 2

• 4

• 6

• 8

Multiple Choice

12. Rename. 10 pounds = _____ ounces

**Think small to large - divide; large- to small multiply. The are 16 ounces in a pound.

• 160

• 16

• 1100

• 64