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## 4th grade

### Course: 4th grade > Unit 14

Lesson 6: Converting units of volume# Convert liters to milliliters

CCSS.Math:

Sal converts between liters and milliliters.

## Want to join the conversation?

- Are milliliters 1000 liters?(10 votes)
- A milliliter is 1/1000 of a liter

or

1 liter = 1000ml

1/2 a liter is 500ml(8 votes)

- Add 2400 mL to 8.9 L(1 vote)
- Both measurements need to be expressed in the same unit before they can be added (just like adding fractions requires first using a common denominator).

Remember that 1 L = 1000 mL.

So converting L to mL requires multiplying by 1000 (or equivalently moving the decimal point three places to the right). This also means that converting mL to L requires dividing by 1000 (or equivalently moving the decimal point three places to the left).

One method is to convert 2400 mL to L, getting 2.4 L.

Then we can add 2.4 L + 8.9 L = 11.3 L.

Another method is to convert 8.9 L to mL, getting 8900 mL.

Then we can add 2400 mL + 8900 mL = 11300 mL.

While the two answers we get may look different (11.3 L and 11300 mL), they are equivalent because 1 L = 1000 mL.

Of course, the answer that you choose to write or enter will depend on what units you're asked to use for your answer.(16 votes)

- actually one liter is equal to 1000 milliliters(8 votes)
- if 1l is 1000ml so what will be 10ml into l?(7 votes)
- the answer to you question is simply 0.01 liters(2 votes)

- Did he say 19 or 90 at1:31(5 votes)
- how many milliliters are in a Liter?(4 votes)
- 'mil' means 1000, so we can deduce that there are 1000 milliliters in one liter.(6 votes)

- ML=1,000 and L eqauls up to a liter(5 votes)
- What is greater 7 gallons Or 30pints(4 votes)
- It is probably 7 gallons. I do not know.(2 votes)

- Does mili mean 1000 or a million and why?(4 votes)
- In Latin, "mil" means 1000. In French, "mille" also means the same thing.(2 votes)

- is a million gallon 4 million liters ?

?(3 votes)

## Video transcript

- [Instructor] What we're
going to do in this video is some examples converting
between liters and milliliters and just as a reminder,
milli means one-thousandth so a milliliter is
one-thousandth of a liter, or another way to think about it, one liter is 1000 milliliters. So given that, how many
milliliters would seven liters be? Pause the video and think about that. Well if one liter is 1000 milliliters, then seven liters would
be 7000 milliliters. And what about 18 liters? Pause the video and think about it. Well that would be 18,000 milliliters. So however many liters you've got it would be a thousand
times as many milliliters because each milliliter is
one-thousandth of a liter. Let's do some more examples. So here it says blank
milliliters equals 15 liters. Pause the video again, see
if you can figure this out. Well remember, every liter
is a thousand milliliters. So 15 liters would be 15,000 milliliters. Remember, if you have a smaller unit, and here you're smaller
by a factor of a thousand, the number that you would need of it to have the same as a
large unit would be larger. So you have a smaller unit, so you have a larger number here. Let's do one more example. Compare using greater than,
less than, or equal to. So nine liters, how does that
compare to 90 milliliters? Pause this video and try
to answer it for yourself. Well how many milliliters is nine liters? Nine liters is the same
thing as 9,000 milliliters and 9,000 milliliters is clearly greater than 90 milliliters. So what you want to do
in a problem like this is convert both to milliliters. 9,000 milliliters, that's
what nine liters is, that's 9,000 milliliters,
that's going to be greater than 90 milliliters.