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Convert 250 cm to m

Step by step, with the reason for every step · Converting units · Foundations

Step by step

The question

Question: change 250 centimeters into meters.

250 cm = ? m

1 Find the link

1 meter is 100 centimeters.

1 m = 100 cm

2 Make the unit fraction

We want meters, so meters go on top.

We have centimeters, so centimeters go at the bottom.

Top and bottom are the same amount.

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

1 m100 cm = 1

Careful!

Not upside down.

Then the centimeters would not cross out.

Careful: not 250 cm × 100 cm1 m ✗

3 Multiply

We multiply 250 centimeters by the fraction.

250 cm = 250 cm × 1 m100 cm

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

Cross them out.

Meters are left.

What is left: 250, divided by 100.

= 250100 m

250 divided by 100 is 2.5.

So 250 centimeters is 2.5 meters.

= 2.5 m

4 Check

Does it make sense?

Meters are bigger than centimeters.

So we need fewer of them.

2.5 is less than 250.

Yes.

m bigger than cm → fewer: 2.5 < 250

And back the other way: 2.5 times 100 = 250.

We get 250 centimeters again.

So the answer is right!

back: 2.5 × 100 = 250

Let's look back.

First: find the link.

Then: make the unit fraction.

Then: multiply.

Last: check.

Answer
= 2.5 m

Your turn

Try this one yourself, then check:

Change 245 cm = ? m
Show the answer
245 cm = 2.45 m

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