Convert 4 meters to centimeters Step by Step

Step by step

The question

Question: change 4 meters into centimeters.

4 m = ? cm

1 Find the link

1 meter is 100 centimeters.

1 m = 100 cm

2 Make the unit fraction

We want centimeters, so centimeters go on top.

We have meters, so meters go at the bottom.

Top and bottom are the same amount.

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

100 cm1 m = 1

Careful!

Not upside down.

Then the meters would not cross out.

Careful: not 4 m × 1 m100 cm ✗

3 Multiply

We multiply 4 meters by the fraction.

4 m = 4 m × 100 cm1 m

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

Cross them out.

Centimeters are left.

What is left: 4 times 100.

= 4 × 100 cm

4 times 100 is 400.

So 4 meters is 400 centimeters.

= 400 cm

4 Check

Does it make sense?

Centimeters are smaller than meters.

So we need more of them.

400 is more than 4.

Yes.

cm smaller than m → more: 400 > 4

And back the other way: 400 divided by 100 = 4.

We get 4 meters again.

So the answer is right!

back: 400 ÷ 100 = 4

Let's look back.

First: find the link.

Then: make the unit fraction.

Then: multiply.

Last: check.

Answer