Question Video: Converting Centimeters to Meters | Nagwa Question Video: Converting Centimeters to Meters | Nagwa

Question Video: Converting Centimeters to Meters Mathematics • Fourth Year of Primary School

Look at the ruler. 1 meter = 100 centimeters. How many centimeters are in 3 meters? 3 m = _ cm.

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Video Transcript

Look at the ruler. One meter equals 100 centimeters. How many centimeters are in three meters? Three meters equals what centimeters.

To begin within this question, we’re told to look at the picture of the ruler. So, we better start by doing that. What can we see? Looks a little bit like a number line, doesn’t it? It starts at zero. And we can see each multiple of 10 is labeled: 10, 20, 30, and so on all the way up to 100. Now if we look at the start of the ruler, we can see the letters cm. This shows us the unit of measurement that our ruler shows. cm stands for centimeters. And so when we’re counting 10, 20, 30, and so on, we’re counting in centimeters. This ruler goes from zero to 100 centimeters.

But there’s something else interesting about our ruler. Can you spot it? At the other end of the ruler, there’s an arrow labeled one m. So if we count all the way up to 100 centimeters, it’s the same as one m. Do you know what one m stands for? Of course, we’re told in the fact above the ruler, aren’t we? One meter. One meter is the same as 100 centimeters, and our ruler helps to show this. Now, if one meter is the same as 100 centimeters, we can use this to help answer our question “How many centimeters are in three meters?” Let’s use a bar model to help us.

If we know one meter is the same as 100 centimeters, then two meters must be the same as two lots of 100 centimeters or 200 centimeters. And so to answer our question, three meters will be the same as three lots of 100 centimeters or 300 centimeters. The number of centimeters that are in three meters is 300. Three meters equals 300 centimeters.

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