About this video
The video finds how many ounces are in 6 pounds. Since there are 16 ounces in a pound, Sal multiplies 6 x 16, showing how the pounds units cancel, and gets 96 ounces.
You'll be able to
- recall that 1 pound = 16 ounces.
- convert pounds to ounces by multiplying by 16.
- explain why the pounds units cancel out.
Key words
- pound
- A US customary unit of weight that equals 16 ounces.
- ounce
- A small US customary unit of weight; 16 of them make a pound.
- per
- Means 'for each', so 16 ounces per pound means 16 ounces for each pound.
Transcript
How many ounces are in 6 pounds? So we have 6 pounds and we need to convert them to ounces. And if you don't know it already, you'll know it now, that there are 16 ounces per pound. So what we want to do is we want to have pounds in the denominator. It's in the numerator right now.
So we want to divide by pounds and multiply by ounces. Maybe I'll write it out. And I just told you that there are 16 ounces for every 1 pound. So if we multiplied these two expressions, this pounds will cancel with that pounds, and we'll just be left with the unit of ounces, which is what we want, and we just multiply 6 times 16.
So it works out unit-wise, and it makes sense as well. If we have 16 ounces per pound, and we have 6 pounds, we just have to multiply 6 times 16. That'll be the total number of ounces we have. So this is going to be equal to-- what's 6 times 16? So if you take 16 times 6, 6 times 6 is 36.
Carry the 3. 6 times 1 is 6, plus 3 is 9. So 6 times 16 is 96. You have this divided by 1 here, but that's not going to change anything. And then all we're left with in the dimensions are the ounces. So 6 pounds are 96 ounces.
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