Unit conversion
None
Watch the entire video
Converting gallons to quarts, pints, and cups
Converting Gallons to quarts pints and cups
Discussion and questions for this video
Do you understand English? Click here to see more discussion happening on Khan Academy's English site.
 How many cups are in 3 and 1/2 gallons?
 So before even addressing this question, let's just think
 about how large a cup is.
 Actually, I'll give you a little bit of overview of how
 many cups there are in a pint, how many pints in a quart, and
 how many quarts in a gallon.
 Let me just draw a cube here, and let's imagine
 that this is a gallon.
 The most common time we see a gallon is when you see a
 gallon of milk.
 So let's say that that whole thing is a gallon.
 You can imagine if it had a handle, it would be kind of a
 big gallon of milk.
 Now, there are 4 quarts per gallon.
 Let me write this over here.
 There are 4 quarts per gallon.
 So if I were to draw the quarts here, I could divide
 this gallon into 4 quarts, and then each of these sections
 would be a quart.
 So you would have 4 quarts.
 So this right here that I've just drawn in blue would be
 exactly 1 quart.
 And obviously, there's 4 of them in this entire gallon.
 Now, you can divide the quarts into pints.
 You have 2 pints per quart.
 So this quart that I drew here, I can divide it into 2,
 like that, and this little section that I'm highlighting
 in magenta is a pint.
 That is a pint right over there.
 And then finally, there are 2 cups per pint.
 So this pint right here, I can divide it into 2, and each of
 these will be a cup.
 So this section right here will be a cup.
 Now, we can go straight and figure out exactly how many
 cups there are per gallon.
 Actually, that might be an interesting way
 to think about it.
 If you have 4 quarts let's multiply it right here.
 So you have 4 quarts per gallon
 times 2 pints per quart.
 What does this give you?
 This gives you 4 times 2 is equal to 8.
 And then the quarts cancel out, and you
 have 8 pints per gallon.
 And that makes complete sense because we had 4 quarts in
 this gallon, and then each of those quarts
 have 2 pints in them.
 So 4 times 2.
 So 8 pints per gallon.
 And then we can multiply that times 2 cups per pint.
 So I could just copy and paste this right here.
 Actually, I should've cut and paste.
 Let me select it again.
 I want to do that so I get that real estate back.
 So edit, cut, edit, paste.
 There you go.
 So now you multiply this times 2 cups per pint.
 And the reason why this will work is because you have pints
 in the numerator.
 It cancels out with the pints in the denominator.
 And you will be left with I'll go back to the yellow 8
 times 2 is 16.
 In the numerator, we have cups per gallon.
 Now, we just figured how many cups there are per gallon.
 That makes sense.
 This section right here is exactly 1/16 of this entire
 cube, this entire gallon.
 But we haven't even answered our question.
 We want to figure out how many cups there are
 in 3 and 1/2 gallons.
 So let's write it over here.
 So we're concerned with 3 and 1/2 gallons.
 I don't like working with mixed numbers.
 I like to turn them into improper fractions.
 3 and 1/2 is the same thing as 2 times 3 is 6, plus 1 is 7.
 This is the same thing as 7/2.
 If you divided 7 by 2, you would get 3 with a remainder
 of 1, or this would be 3 and 1/2, so this is
 the exact same thing.
 So we want to know how many cups are in 7/2 gallons.
 So what we want to do is end up with cups, and we want the
 gallons to cancel out.
 So we have gallons in the numerator right here.
 It's definitely not in the denominator.
 And so we want to divide by gallons.
 And then we're going to have a numerator.
 We have cups in the numerator.
 And how many cups are there per gallon?
 Well, we just figured that out.
 There are 16 cups per gallon.
 When you multiply these two quantities, the gallons will
 cancel out, and you'll just be left with cups, and that's
 what we wanted.
 So it's going to be 7/2 times 16.
 So this is going to be 7 times 16/2 cups.
 You could divide 16 by 2 to get 8.
 2 divided by 2 is 1.
 So it just becomes 7 times 8 divided by 1, or just 7 times
 8, which is 56.
 So this is equal to 56 cups.
 And this should make sense.
 This should be a much larger number because cups are a much
 smaller unit.
 So if you have 3 and 1/2 gallons, you will have many,
 many, many more cups in that 3 and 1/2 gallons,
 so this makes sense.
Be specific, and indicate a time in the video:
At 5:31, how is the moon large enough to block the sun? Isn't the sun way larger?

Have something that's not a question about this content? 
This discussion area is not meant for answering homework questions.
Towards the end, he gets 7x16/2. Where did the 2 come from, and why did he only divide 16 by 2?
He got 2 from 3 1/2 gallons which was later converted into improper fraction 7/2, then he multiplied it by 16 which is amount of cups in a gallon, there, he got 56 which is amount for cups in 3 1/2 gallons
He skipped a step which would have been 7/2 (which was the problems) by 16/1 (which reflects the amount of cups there are in a gallon), and reduces both sides by two (dividing)... if you didn't catch this, you might want to go back to the multiply/dividing fractions module, and that'll help you catch up to what he did.
The 2 came from 7/2 and he divided 16 in the numerator by 2 and the 2 in the denominator by 2 in order to reduce the fraction to its simplest form. Why he divided by exactly 2 is because 2 goes into both 2 and 16, you say that 2 is a common factor of 2 and 16. You could divide 16 by 4 as well but then the 2 in the denominator can't be divided by 4, not without being smaller than 1.
You may or may not be familiar with the fact that the expression 7/2 x 16/1 can be written as 7x16/2x1. That's the same thing. So you can either write it as two separate fractions multiplied by each other, or you can let the numerators from both fractions stand in the numerator or on top of the bar and put a multiplication sign between them. You would do the same for the denominator.
Also he could have multiplied out the numerator and the denominator first, and then simplified it.
7/2 x 16/1 = 7x16/2x1 = 112/2
What's 112 divided by 2? It's 56! Or you could have simplified that first in the fraction, by dividing both the numerator and the denominator by the greatest common factor of both 112 and 2. So what's the greatest common factor of 112 and 2? It's 2! Number 2 is the only thing that goes into both 2 and 112.
But if you do the simplification at an early stage like Sal did where he simplified 16/2 to 8/1 and ultimately 8, you get a much smaller number at the end. Instead of dividing 112 by 2 the problem boils down to simple multiplication of 7 multiplied by 8.
You need to watch the fractions, multiples and factors videos to better understand this.
You may or may not be familiar with the fact that the expression 7/2 x 16/1 can be written as 7x16/2x1. That's the same thing. So you can either write it as two separate fractions multiplied by each other, or you can let the numerators from both fractions stand in the numerator or on top of the bar and put a multiplication sign between them. You would do the same for the denominator.
Also he could have multiplied out the numerator and the denominator first, and then simplified it.
7/2 x 16/1 = 7x16/2x1 = 112/2
What's 112 divided by 2? It's 56! Or you could have simplified that first in the fraction, by dividing both the numerator and the denominator by the greatest common factor of both 112 and 2. So what's the greatest common factor of 112 and 2? It's 2! Number 2 is the only thing that goes into both 2 and 112.
But if you do the simplification at an early stage like Sal did where he simplified 16/2 to 8/1 and ultimately 8, you get a much smaller number at the end. Instead of dividing 112 by 2 the problem boils down to simple multiplication of 7 multiplied by 8.
You need to watch the fractions, multiples and factors videos to better understand this.
I think he dived 2 by 16 because they are the top and bottom of the fraction.
Sal got 2 from 3 1/2 gallons which was later converted into the improper fraction 7/2, then he multiplied it by 16 which is amount of cups in a gallon, there, he got 56 which is amount for cups in 3 1/2 gallons.
He divided it by two because it was 3 1/2
He skipped a step so that might be why you did not get it
He cross reduced. I think
the 2 came from the 3 1/2 galllons
I am not positive though so you could just ignore that comment. :1
what is ur question
how do you convert let's say for an example gallons to pints or pints to quarts?
1 gallon= 4 quarts
1 quart= 2 pints
so, 4*2=8
1 gallon is the same as 8 pints
1 quart= 2 pints
so, 4*2=8
1 gallon is the same as 8 pints
1 gallon = 4 quarts
1 gallon = 8 pints
1 gallon = 16 cups
1 gallon = 8 pints
1 gallon = 16 cups
how do you convert a picture through space
1 gallon is 8 pints
1 pint is 1/2 quarts
1 pint is 1/2 quarts
how come there is not just a video on only customary units? i get confused with metric=D
Metric uses entirely powers of 10, it is much much much easier then the units we use (known as Imperial Units). Metric is confusing right now because you haven't had nearly as much practice with it then you have with the Imperial system. You've been using the imperial system since what, first grade? Second grade? How long have you been using metric? If you work with metric enough you'll begin to wonder why we stick with such a crazy system in the US.
USA is different. i feel the same way. customary system is so confusing and metric system is so easy
i just need help converting all of the quarts, pints, gallons etc. can you help me? please thank you
how many cups in one gallon ??
There are 16 cups in a gallon.
1cup=8ounces
1pint=2cups or 16ounces
1quart=2pints,4cups, or 32 ounces
1gallon=4quarts, 8pints,16 cups,or 128 ounces
1pint=2cups or 16ounces
1quart=2pints,4cups, or 32 ounces
1gallon=4quarts, 8pints,16 cups,or 128 ounces
so there are 2 cups in a pint, and two pints in a quart. That makes 4 cups in a quart because 2*2=4. There are also 4 quarts in a gallon (if you've seen a 1/2 gallon of milk it's two quarts) so that make 4*4= 16 cups in a gallon!
Further I readily am aware of these numbers, because I buy (64 oz) half gallon almond milk and cook in increments of 1 cup.
There are 16 cups per a gallon (If you don't know the island of G I will tell you: Welcome to the island of G, there are 4 queens, 8 princes, (or princesses however you like) and the Prince or Princess each had 2 children)
Yes, there is 16 cups in a gallon because there is 4 quarts in 1 gallon. Then there is 4 pints in a quart.2 cups=1 pint and 4 cups(2 pints) is equal to 4 cupsx4 pints=16 cups. So, there are 16 cups in a gallon.
There are 16 cups in a gallon. 1 cup = 8 oz & 1 gal = 128 oz 128/8=16
This tutorial could have been answered in a much shorter time if the method of conversion of ounces to gallons had been employed.
My approach was to do the calculations 1 cup = 8 oz & 1 gal = 128 oz 128/8=16 and then say 3.5 * 16. Of course the answer is 56.
This tutorial could have been answered in a much shorter time if the method of conversion of ounces to gallons had been employed.
My approach was to do the calculations 1 cup = 8 oz & 1 gal = 128 oz 128/8=16 and then say 3.5 * 16. Of course the answer is 56.
how do you convert oz to pounds
Their are 16 ounces in a pounds.
16 Ounces=1 Pound
1 Ounce= 1/16 Pounds
16 Ounces=1 Pound
1 Ounce= 1/16 Pounds
There are 16 ounces in one pound
16 ounce=1 pound
Then 1/16 of a pound is 1 ounce.
1/16 pounds=1 pound.
Hope that this helped.
16 ounce=1 pound
Then 1/16 of a pound is 1 ounce.
1/16 pounds=1 pound.
Hope that this helped.
everyone google has customary+metric calc
tha said sad u sad
What is an easier way to remember how to convert between measurements?
draw a big G
then draw 4 Q in the g
then draw 2 P's in each q
and then then draw 2 c's in the p's
then it should look like a face
: )
then draw 4 Q in the g
then draw 2 P's in each q
and then then draw 2 c's in the p's
then it should look like a face
: )
You should be able to remember by the kingdom of G. Draw a big G (for gallons) inside draw four Q( for quarts) inside of the Q draw two P(for pints) and inside of that draw 2 C (for cups). The story goes something like this, there once was a kingdom G that had 4 queens. Each queen had two princesses. Each princess had two cats . The end.
the word quart sounds like quarter which makes me think of four. so i know there are four quarts in a gallon. look at the label of your typical bottle of water which is roughly 16 oz, the equivalent of one pint or 2 cups, thus one cup is 8oz.
i agree with Draval1. my sisters teacher taught their class the buterfly trick for remembering. search it up on Google!!!
Study or write it down somewhere where you can see it a lot. Memorization is key when it comes to dimensional analysis.
draw a gallon man
Is there something larger than a gallon?
Of course. You most likely will never need to know them, but there are some units larger than a gallon.
Offsite link to a video with a lot of them (not just volume):
http://www.youtube.com/watch?v=Q8qQolqkTU0
Offsite link to a video with a lot of them (not just volume):
http://www.youtube.com/watch?v=Q8qQolqkTU0
How in the world am I supposed to remember/memorize all this?
A tip anybody?
A tip anybody?
And a tip for Anam is that just make up little tricks and if you want, you can draw gallon man. Search it up.
You can memorize gallon man or the big G they are very helpful. (google it if you don't know what the big G or gallon man)
For those that have not grown up with these measurements it is a bit difficult as opposed to the SI system with base 10. Usually, you can use a conversion table.
There are 4 quarters in a dollar,
just as there are 4 quarts in a gallon.
Gallon6 letters
Quart5 letters, 4 in a gallon
Pint4 letters, 2 in a quart
Cup3 letters, 2 in a pint
I hope this helps you!
just as there are 4 quarts in a gallon.
Gallon6 letters
Quart5 letters, 4 in a gallon
Pint4 letters, 2 in a quart
Cup3 letters, 2 in a pint
I hope this helps you!
Kingdom of G (scroll up and you'll find it written by me, pragya jha)
well you could try to memorize it while on the toilet
If you are not familiar with our system, then work with it, your hands and your eyes. Draw it out like the video does. Working with the individual parts will help you understand:) . These concept (1 gallon equalls 4 quarts, etc ) are all memorized when we were young, same as when you were young you memorized another system. Don't let it get you stuck.
Please explain! I use the metric system and need a bit more help.HELP!
Can you use Google? Because if you type into the searchbar '' Meters into inches'' you will get an exact answer.
What type of gallon is he using... US or 'British?'
He is using the US version.
Read this it will explain the difference.
http://en.wikipedia.org/wiki/Gallon
Read this it will explain the difference.
http://en.wikipedia.org/wiki/Gallon
how do i memorize all this
How many teaspoon are in 2 oz of liquid?
12 teaspoons... I just googled it:)
This is not a question but I know an easier way with something called gallon man. It is a gallon with 4 quartz coming out and 2 pints coming out of each quart and 4 cups coming out of each pair of pints. This is showing how some things equal others. I wish I could show a picture.
Why is a pint called a pint? Why is a gallon called a gallon?
Perhaps you should consult a _volume_ on etymology. In all seriousness, I'm not sure, but I don't think this is the right place to ask.
I googled pint word origin and then gallon word origin. This is what I found.
Many sources say pint comes from the French pinte, but no one knows where that comes from.
As for gallon it is from the Middle English gallon which is from AngloNorman French galon, which is from the base of medieval Latin galleta, galletum ‘pail, liquid measure,’ perhaps of Celtic origin.
I think it's fine question to ask because finding out the origins can help you understand and remember. For example lb, the abbreviation for pounds comes from Latin libra for scales. That can help you remember the strange abbreviation.
Many sources say pint comes from the French pinte, but no one knows where that comes from.
As for gallon it is from the Middle English gallon which is from AngloNorman French galon, which is from the base of medieval Latin galleta, galletum ‘pail, liquid measure,’ perhaps of Celtic origin.
I think it's fine question to ask because finding out the origins can help you understand and remember. For example lb, the abbreviation for pounds comes from Latin libra for scales. That can help you remember the strange abbreviation.
How can you convert gallons to pounds?
You can't. Gallons is a way to measure volume, and pounds is a way to measure weight. The reason why you can convert gallons to quarts, pints, or cups is because gallons, quarts, pints, and cups all measure volume. If you had a gallon of something (like water), you could use the volume of the water to find the weight of the water. But you can't convert gallons into pounds without something else in the equation, and it'll be different depending on what that "something else" is. You will learn more about this in the chemistry and physics playlists.
Well the reason I posted this question because I couldn't find anything useful to help with this question: 900g/day = ___ lb/day
You can't. Gallons are for liquid measurements of capacity and pounds are weight measurements of capacity.
Why didn't you turn 7/2 into a decimal, 3.5?
Converting to decimal would have added several more steps. It's much easier to leave it as a fraction. Besides, if it had been 7/3 instead of 7/2, what would you do then? Converting to decimal would require an inconvenient repeating digit. Better to get used to doing things the right way and leaving intermediate fractions asis.
You are right
sometimes its easier to work with fractions for some people. I prefer decimals myself but to each their own.
Is there something smaller than an ounce?
In the standard system, there is nothing smaller than an ounce. However, in the metric system, milliliters are smaller than ounces.
sal should covert the unit more clearly
if u would've listened more carefully uwould not be asking this question
hi sal khan!! i had a question about double bar graphs and was wondering if you have time or if not to late.. if you could make an exercise and video!
how many fluid ounces are in a gallons?
128 fl oz, because there are 16 cups in a gallon, and 16 (8 fl oz)=128 fl oz.
Equation:
16 cups=1 gallon
1 cup = 8 fl oz
16 x 8= 128 fl oz
16 cups=1 gallon
1 cup = 8 fl oz
16 x 8= 128 fl oz
thanks,applepi3.14 i liked that way you answer me liked that! Im only in 5th grade and we JUST got to it
how many cups are in 3/4 gallon
A gallon is equal to 16 cups. 3/4 is equal to 12/16, so there are 12 cups in 3/4 of a gallon. Hope this helps!
Is there something smaller than a cup?
yes, there is another measurement called an ounce. there are 8 ounces in one cup.
This is during the whole video. there is a way easier way of learning this. This video is making it confusing and he repeats his words every second it gets annoying
i need help remembering how many quarts a gallon, how many pints per quart and how many cups per pint. HELP :(
this is kind confusing :(
Convert 15 pints to quarts shiw proportion
1 quart = 2 pints
so 15/2= 7.5 quarts.
so 15/2= 7.5 quarts.
you could have multiplied 16 by 3 and then added 8 four the half gallon. When I did it it still got me the same answer and it was easier for me. Is there a reason we do it the other way?
Ask a question...I need help with the multi and divi part
so you just times them together?
Why do like to change it into a improper fraction? I think proper fractions are easy to use better then improper fraction. It would make more sense to just use proper fractions.Thanks though!
because with improper fractions, it is just one set of numbers. Looking at it is harder than doing it....
how many gallons and qt in 38 pints
well each quart is 2 pints so there are 38/2 qts in pints which is 19 qts.
and then there are 8 pints in a gallon so 38/4=9.5 gallons in 38 pints.
please vote up if this helped!
and then there are 8 pints in a gallon so 38/4=9.5 gallons in 38 pints.
please vote up if this helped!
How many oz are there in a cup, pint, quart, and gallon
There are 8 oz in a cup. 2 cups in a pint. 4 pints in a Quart and 4 quarts in a gallon.
I do not think this is true at 1:49 because 1 gallon is like 3.7... liters and 1 cup is 250 mL. That means a pint is 500 mL and a quart is 1 liter. But if there are 4 quarts, 1 gallon = 4 litres! Someone please help!
I am converting recipie items and in doing so, I have to multiply 1/2 teaspoons(.25 ounces) by 16.666(recipie conversion factor). So, I multiply (1/2 teaspoon) .25 ounces X 16.666 and get 4.166 ounces. what do I do with the .116?
Probably you would just leave it in decimal form in this case. If you were working in fractions the conversion factor would probably be 16 2/3 and you would do 1/4 X 16 2/3 = 4 1/6
0.166 is close to 1/6
When you are actually using a recipe the amounts are not exact amounts because there is always some error in measuring.
0.166 is close to 1/6
When you are actually using a recipe the amounts are not exact amounts because there is always some error in measuring.
So does it mean that 16 cups are in one gallon? I'm really confused...
yes, 1 US gallon = 16 US cups
How do you convert pints into quarts?
Divide by two. We know there are two pints to every quart. If you wanted to convert quarts to pints, you would multiply by two, right? Since you want to do the opposite, use the inverse operation. If you had 8 pints, you would divide by two to get 4 quarts. :)
could you multiply the 2 cups/pints by 2 pints/quart then by 4 quarts/gallon?
You could, if you like!
What is 6 1/4gallons____ floz
There are 128 fluid ounces in a gallon.
So basically, you'd multiply 6.25 by 128 and get your answer. :)
So basically, you'd multiply 6.25 by 128 and get your answer. :)
The video is great.
the video is ok
the video is amazing
Which is heavier, 0.11oz or 0.1oz
0.11 oz is heavier. Both measurements have the same unit, therefore when comparing them you only need the number part. 0.11>0.1, therefore 0.11 oz is larger.
How many gallons are there in a cup
A gallon is much bigger than a cup, so if we turn the question around to "How many cups are in a gallon?" the answer is 16 cups. Now back to your question, there are 1/16 gallons in a cup.
there is 1/16 of a gallon in each cup. you're kind of doing it backwards. gallons are bigger, cups are smaller. so 16 cups to a gallon, 1/16 of a gallon per cup. yeah?
don't understand
how do you convert a picture through space
2:0, If I have a word that involves decimals how would I convert?
how many cups = 16 fluid ounces
There are 8 cups to a fluid ounce. Another way of writing this could be 8(fluid ounces) = 1(cup). Since you want to know the conversion of 16 times this amount, multiply both sides by 16 and you get 2(cups) = 16(fluid ounces).
EDIT: This is wrong, the answer is 2 cups, I just looked at this and it didn't make much sense to me. There are 8 fluid ounces to a cup so you multiply both sides by 2 and you get 16(fluid ounces) = 2 cups
EDIT: This is wrong, the answer is 2 cups, I just looked at this and it didn't make much sense to me. There are 8 fluid ounces to a cup so you multiply both sides by 2 and you get 16(fluid ounces) = 2 cups
Converting ounces to pounds
16 ounces to 1 pound.
Why do you cancel out when you have 2 quarts to find pints?
can we get more examples of conversions?
4 quarts are in 1 gallon
7/16lb=?ounces
Since 1 pound is 16 ounces, then 7/16 pounds is 7 ounces.
Is it more efficient to use this system or metrics?
how do you compare 400 pint to 100 gallons?
You would need to covert to a common unit of measure...8 pints are in 1 gallon so you could compare it either way: 50 gal to 100 gal OR 400 pint to 800 pint
I don\t understand why Sal does this:
8 pint / 1 galon * 2 cups / 1 pint
Why not multiply the pints with the pints? I mean I learned the process: if fraction 1 has pint at numerator,fraction 2 should have it at denominator,but I just don't understand why.
8 pint / 1 galon * 2 cups / 1 pint
Why not multiply the pints with the pints? I mean I learned the process: if fraction 1 has pint at numerator,fraction 2 should have it at denominator,but I just don't understand why.
Some people call it "dimensional analysis". I have no idea why but it would look like this:
```
8 pints 2 cups
 * 
1 gallon 1 pint
```
If you multiplied the pints, you would get
```
8 pints²

2 cupic gallons
```
Now does that make any sense? No!
When you multiply Sal's together, you will get
```
8 pint(s) * 2 cups

1 pint * 1 gallon
```
Notice that I switched around the gallon and the pint at the bottom to make the next step more understandable. This works perfectly due to the commutative property of multiplication.
Now remember how you can simplify
```
2 * 6

2 * 2
```
By getting rid of the 2 altogether? This works because they are being multiplied, which is the opposite of division. 12 / 4 is 3, just like 6 / 2
You can actually do that to get rid of the word "pint". Literally! You can cancel the units, by getting rid of the unit from the numerator and denominator from the number they are attached to. That might not be the best explanation, but it results in this:
```
8 * 2 cups

1 * 1 gallon
```
Now think about it, if you have 8 groups of 2 cups each (8 * 2 cups), you really have 16 cups! And if you have a group of a gallon each, you really have a gallon! So:
```
16 cups

1 gallon
```
Which is actually the exact number of cups in a gallon! Cool huh?
The reason fraction 1 has it in the numerator and fraction 2 has it in the denominator, is that you can cancel out the word "pint".
```
8 pints 2 cups
 * 
1 gallon 1 pint
```
If you multiplied the pints, you would get
```
8 pints²

2 cupic gallons
```
Now does that make any sense? No!
When you multiply Sal's together, you will get
```
8 pint(s) * 2 cups

1 pint * 1 gallon
```
Notice that I switched around the gallon and the pint at the bottom to make the next step more understandable. This works perfectly due to the commutative property of multiplication.
Now remember how you can simplify
```
2 * 6

2 * 2
```
By getting rid of the 2 altogether? This works because they are being multiplied, which is the opposite of division. 12 / 4 is 3, just like 6 / 2
You can actually do that to get rid of the word "pint". Literally! You can cancel the units, by getting rid of the unit from the numerator and denominator from the number they are attached to. That might not be the best explanation, but it results in this:
```
8 * 2 cups

1 * 1 gallon
```
Now think about it, if you have 8 groups of 2 cups each (8 * 2 cups), you really have 16 cups! And if you have a group of a gallon each, you really have a gallon! So:
```
16 cups

1 gallon
```
Which is actually the exact number of cups in a gallon! Cool huh?
The reason fraction 1 has it in the numerator and fraction 2 has it in the denominator, is that you can cancel out the word "pint".
2 pints and one quart how many cups are in 3 1/21 gallons?
How do u convert cups into fluid onces?
Every cup is 8 fluid ounces.
How do you convert gallons to liters?
There are 3.78541 liters in one gallon.
At 4:37 why does Sal cancel the gallons?
I dont know. What video
The question is: "how many CUPS are there in 3 1/2 gallons?" As Sal says at 4:13 , we need to cancel the gallons so as to be left with 'cups' in the numerator.
i didn't understand what sal was saying. can sal make another video that is more clear
I really don't get the adding stuff so the bottom
says what I need help on so plz answer as fast
says what I need help on so plz answer as fast
Hey can't a cup be large or small? Eh what is his i don't get it
A cup has 2 definitions. #1: Something to drink out of. #2: A type of measurement. Sal was referring to the measurement.
38 Pints = how many gallons and qts
how many pints in 3 1/4 quarts of water
So there are 2 pints in a quart so all we need to do is 2*3 1/4.
3 1/4*2= 6 1/2.
So there are 6 1/2 pints in a quart!
3 1/4*2= 6 1/2.
So there are 6 1/2 pints in a quart!
32 qt has how many cup
32 quarts is 128 cups, since 1 quart=4 cups
how do you find the unknown in a proportion
Why do you have to cross out the other units?
Can you divide gallons into pints?
Yes:
1 gallon = 4 quarts = 8 pints
1 gallon = 4 quarts = 8 pints
Why doesn't talk about metric stuff like liters and meters?
He has that in the U.S. Customary and Metric Units video.
Like I said to someone else, if you are still wanting to see a video on that here is the link;
http://www.khanacademy.org/math/arithmetic/ratesandratios/unit_conversion/v/uscustomaryandmetricunits
Like I said to someone else, if you are still wanting to see a video on that here is the link;
http://www.khanacademy.org/math/arithmetic/ratesandratios/unit_conversion/v/uscustomaryandmetricunits
I have a test coming up and I was curious if any one had any way for me to remember the different conversions.
Thanks,
Taylor
Thanks,
Taylor
what if u need to add something how would u do that with ur gallons and pints? so for example 2 gals and 5 pints added 5 gals and 8 pints what I the answer ? where would u convert the or put the 2 digit numbers its very confusing pls answer as soon as possible I have my test on Friday I use this to answer my problem so hope u guys can answer this
Why don't they include ounces?
i hate khan academy
because It's units of capacity standerd
I wish they had more difficult stuff on converting units. I am learning a new technique for this in 7th grade advanced singapore math and i withthey put more difficult exersizes.
go to 7th grade math then you are in 5th grade math
at 8:06, what is the work to this video
can we be friends?
do you have converting customary units
He does have a video on U.S. Customary and Metric Units.
Here is the link if you are still wondering.
http://www.khanacademy.org/math/arithmetic/ratesandratios/unit_conversion/v/uscustomaryandmetricunits
Here is the link if you are still wondering.
http://www.khanacademy.org/math/arithmetic/ratesandratios/unit_conversion/v/uscustomaryandmetricunits
thanks man are you a kid or a adult and do you have a acount
how do you convert qtrs. to gal
Say you have a starting unit in pints but you need quarts. Write the units and numbers down, I.e 4pints
We'll say for this example that there are 8 pints in a quart (might be wrong but it's the same method for solving) so well set up the problem 4 pints times 1 quart/8 pints. The pints cancel and so your left with 4/8 quarts. The 1 quart over 8 pints part is called the conversion ratio. So after its done you have 1/2 a quart. Most conversion ratios will be given, but some your expected to memorize.
We'll say for this example that there are 8 pints in a quart (might be wrong but it's the same method for solving) so well set up the problem 4 pints times 1 quart/8 pints. The pints cancel and so your left with 4/8 quarts. The 1 quart over 8 pints part is called the conversion ratio. So after its done you have 1/2 a quart. Most conversion ratios will be given, but some your expected to memorize.
I still don't get how he got the answer
Um at 5:00 he put a w not a c is that a mistake or not ?
what does quart mean
quart is a quarter of a gallon.
OMG.......
i cant really explain that but it is used when saying things as in a minimum of food
like i ate 4quarts of lemonade yesterday
i cant really explain that but it is used when saying things as in a minimum of food
like i ate 4quarts of lemonade yesterday
why stay with this confusing system? The metric system is so much easier.
Both metric and imperial systems have certain cases where they are more convenient.
Metric makes it easy to convert from mL to L, or from mm to cm to m to km. It's also easy to convert from cubic cm to mL.
The imperial system has lots of units that are multiples of 2 or 3 of each other. That makes it easy to divide a recipe or cut a piece of lumber into halves, thirds, fourths, or sixths. Cutting a metric unit into thirds or sixths results in an irrational number.
I'd like to live in a world where we have the prefixroot naming convention of the metric system, but a base12 numbering and measuring system. Then lots of these conversions and divisions would work out to nice whole numbers.
Metric makes it easy to convert from mL to L, or from mm to cm to m to km. It's also easy to convert from cubic cm to mL.
The imperial system has lots of units that are multiples of 2 or 3 of each other. That makes it easy to divide a recipe or cut a piece of lumber into halves, thirds, fourths, or sixths. Cutting a metric unit into thirds or sixths results in an irrational number.
I'd like to live in a world where we have the prefixroot naming convention of the metric system, but a base12 numbering and measuring system. Then lots of these conversions and divisions would work out to nice whole numbers.
Sometimes when working on problems it can seem like the whole reason for doing it is stupid or useless and sometimes it is, but most times you learn a useful skill through the process. Before you write it off completely think about what kind of skill they might be trying to impart and where it might be important or used. Converting gallons and other units of measure correctly is used everywhere from baking in your home, physics in the design of machines you use every day, and chemistry in the production of everyday products just to name a few. The same process is in metric measurements of length but it only seems easier because its often a factor of 10. Converting metric units of time would be the same difficulty as any other nonmetric system.
because Americans are to stubborn to change to something that is better and used more
In the metric system, is there something smaller than an ounce?
maybe there is something less than one ounce. such as: 0.1 nanometre or somethin like that i guess
how do u do it in mixed fractions?
how many tablespoons are in a cup?
and three teaspoons in a tablespoon...
1 cup = 16 tablespoons
28 pints equals how many gallons
28pints equal 3.5gallons
1 pint is equal to .125 gallons
1 pint is equal to .125 gallons
How many ounces are in 12 pints?
I believe there are 16 ounces in a pint.
you mean fluid ounces? check google!
who made up this whole system?
So there are 16 ounces in a pound, but 8 fl. oz. in a cup?
do you use a computer for all those things?
What? Their speaking english. o.O
Yeah speak to us like we arent computer savy! lol oh wait we arent! lol
he uses a Camtasia Recorder ($200) + SmoothDraw3(Free) + a Wacom Bamboo Tablet ($80) on a PC. I used to use ScreenVideoRecorder($20) and Microsoft Paint (Free).
Could you speak English please??? I'm not understanding you at all, and I doubt Seth Scotty Sotelo is either.
At 2:20 why do you cross out the quarts and the gallon?
You actually don't cross out the quarts and the gallon, just the quarts. You cross out quarts twice, once from the first conversion and one from the second. The reason you cross them out is because one is in the numerator and one is in the denominator. It would be similar to crossing out both 4's if you were multiplying the fractions 4/5 * 3/4. Hope that makes some sense.
Is there a good way to memorize this?
how do you meshure 12 gal. divided into 134 people what would the awnser be PLEASE AWNSER
Go look on google.... or ask your mom..
just FYI you spelled anwser wrong...
i said please answer not be a complete pric ass about id P.S. screw you 8=====>
Why are you still using the Imperial system? Convert to metric already U.S. people. I refuse learning these values.
We're confusing, aren't we? Well, to us, standard (Metric) is confusing because we learned our weird ways. So, when we grow up, we are 100% used to our weird ways, like Russian soud funny to us but English sounds funny to them. How would YOU feel if we said you had to convert to Imperial? I can tell you'd refuse. So why would we do otherwise?
 A messsage from The imperials
 A messsage from The imperials
Most people don't want to learn all new units which is what metric conversion would require.
it's all pretty arbitrary
I'm Russian and do not think that English sounds funny, furthermore i learned it since it is a global language and would only benefit me. I learned the metric system following the same mindset. I do not see why couldn't you start implementing the metric system bit by bit, let's say include it in schools for starters.
If i saw a system that makes more sense than the metric one, I would jump right over to it and embrace it, sadly the Imperial system doesn't follow any pattern whatsoever.
Don't get me wrong, I'm not saying that you are silly in any way, i just don't understand why wouldn't you make your life easier for the future generations.
If i saw a system that makes more sense than the metric one, I would jump right over to it and embrace it, sadly the Imperial system doesn't follow any pattern whatsoever.
Don't get me wrong, I'm not saying that you are silly in any way, i just don't understand why wouldn't you make your life easier for the future generations.
so how do you convert liters into gallons
you google
liters to gallons
and theres your answer.
liters to gallons
and theres your answer.
Report a mistake in the video
Example:
At 2:33, Sal said "single bonds" but meant "covalent bonds."
Discuss the site
For general discussions about Khan Academy, visit our Reddit discussion page.
Flag inappropriate posts
Here are posts to avoid making. If you do encounter them, flag them for attention from our Guardians.
abuse
 disrespectful or offensive
 an advertisement
not helpful
 low quality
 not about the video topic
 soliciting votes or seeking badges
 a homework question
 a duplicate answer
 repeatedly making the same post
wrong category
 a tip or thanks in Questions
 a question in Tips & Thanks
 an answer that should be its own question
about the site
Your SpinOffs
Share a tip
Thank the author
Have something that's not a tip or thanks about this content?
This discussion area is not meant for answering homework questions.