Convert 7 liters to milliliters Step by Step

Step by step

The question

Question: change 7 liters into milliliters.

7 L = ? mL

1 Find the link

1 liter is 1000 milliliters.

1 L = 1000 mL

2 Make the unit fraction

We want milliliters, so milliliters go on top.

We have liters, so liters go at the bottom.

Top and bottom are the same amount.

So the fraction is 1, and times 1 keeps the size.

1000 mL1 L = 1

Careful!

Not upside down.

Then the liters would not cross out.

Careful: not 7 L × 1 L1000 mL ✗

3 Multiply

We multiply 7 liters by the fraction.

7 L = 7 L × 1000 mL1 L

Liters on top and at the bottom cancel, like numbers.

Cross them out.

Milliliters are left.

What is left: 7 times 1000.

= 7 × 1000 mL

7 times 1000 is 7000.

So 7 liters is 7000 milliliters.

= 7000 mL

4 Check

Does it make sense?

Milliliters are smaller than liters.

So we need more of them.

7000 is more than 7.

Yes.

mL smaller than L → more: 7000 > 7

And back the other way: 7000 divided by 1000 = 7.

We get 7 liters again.

So the answer is right!

back: 7000 ÷ 1000 = 7

Let's look back.

First: find the link.

Then: make the unit fraction.

Then: multiply.

Last: check.

Answer