Ounces, Pounds, Tons

​Convert Units of Weight

Ounces, Pounds, Tons

Learning Goals:

I will able to ​...

• use the fact that there are 16 ounces in 1 pound to convert between ounces and pounds

• use the fact that there are 2,000 pounds in a ton to convert between pounds and tons

• recognize whether multiplication or division is needed to convert between units

• compare measurements in ounces, pounds, tons, and mixed measures

Subject | Subject

Poll

Which is heavier: a slice of bread, a football, or a blue whale?

• a slice of bread

• a football

• a blue whale

Draw

Use the "Text" feature to type out your answers next to the questions.

​"Ounces, Pounds, and Tons" Video

https://www.youtube.com/watch?v=mnuKynX27lo

​

Ounces, Pounds, Tons

• An ounce (oz.) is the smallest unit of mass.

  • One ounce weighs about the same as one slice of bread.

• A pound (lb.) is the same as 16 ounces. We use pounds to measure our own weight.

  • 1 lb = 16 oz

  • A football or a baseball weighs about one pound.

• We can use tons to weigh very heavy objects. In some countries,

  1 ton = 2,240 pounds, but in the U.S., 1 ton = 2,000 pounds.

  • A small car weighs around one ton.

  • A blue whale can weigh up to 150 tons!

1 pound (lb) = 16 ounces (oz)

1 ton = 2,000 pounds​

Remember !!!

​Ounces and Pounds Conversion

5 x 16

Multiple Choice

83 pounds = ______ ounces

• 1328

• 1320

• 1400

256 oz = ? lb​

256 oz = 16 lb​

​256 ÷ 16

Multiple Choice

176 ounces = ______ pounds

• 13

• 11.5

• 11

• 12

Pounds and Tons Conversion

7 tons = lbs

Tons and Pounds Conversion

7 x 2000

7 tons = 14,000 lbs

Multiple Choice

11 tons = _______ pounds

• 25,000

• 22,000

• 15,000

20,000 lbs = tons

​Pounds and Tons Conversion

20,000 ÷ 2,000

20,000 lbs = 10 tons

Multiple Choice

40,000 pounds = _____ tons

• 20

• 10

• 15

• 25