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### Course: 4th grade>Unit 14

Lesson 5: Converting units of mass

# Converting pounds to ounces

There are 16 ounces in 1 pound.  Learn to convert pounds to ounces. Created by Sal Khan and Monterey Institute for Technology and Education.

## Want to join the conversation?

• Are there smaller units of measure other than nano grams? If so, what are they?
• Here is the order (lowest to highest):
Decigram
Centigram
Milligram
Microgram (mcg)
Nanogram (as you said)
Picogram
Femtogram
Attogram
Zeptogram
Yoctogram
• There two fish caught at a fishing competition, one weighed 31 lbs and 17lbs 2 oz. What is difference in weight?
• The difference in weight is 14 lbs and 2oz.
• Is it fair to say we can place the unit we're trying to solve for (in this case ounces) "across" from the starting term, therefore always placing the opposite term in the opposite position? For some reason the way Sal instructs to place the unit in the opposite position and 'cancel out' confuses me.
• I think what you're saying is correct if you mean the unit that cancels goes in the numerator of the first ratio and the denominator of the second ratio. I also get confused when Sal does that, but it's something you'll need in the higher maths and sciences. If your way gets you the right answer with the right units keep going, you should be fine. Good Luck!
• Can you explain DIMENSIONS in detail ?
• I don't get it! Can someone please help me?
• How to compare 7 pounds to 120 ounces
• How can I convert onuce to pounds not pounds to onuce
(1 vote)
• There are 16 ounces in a pound. So you would divide the amount of ounces by 16. For example: 80 ounces is equal to 5 pounds.
• Can't he just multiply 16x6 and get the answer instead of doing all of this because 16x6=96 and we all now know that there are 16 ozs in one pound.
(1 vote)
• You are right that you can just multiply 16 x 6, but Sal is doing all of that for a reason. As you get into higher maths and sciences you will be doing problems where you are converting multiple times to different units in order to solve 1 problem. What Sal is doing is trying to get you used to having the units that cancel in the numerator of 1 ratio and in the denominator of the second ratio so that you know what cancels out. You may not need it right now, but you will see it later. Hope that helps with the why Homie!