# How to Measure in Eighths on a Ruler

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Measuring in eighths on a ruler is something you can do in just a few quick moments. Measure eighths on a ruler with help from a professional math teacher in this free video clip.

Part of the Video Series: Math Measurements
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## Video Transcript

Hi, my name is Marija. I'm a mathematician and today I'm going to show you how to measure in eighths on a ruler. So, a ruler, between inches is actually split into sixteen pieces. So, it'll go one, two, three, four, five, six, seven, eight will be the long one, nine, ten, eleven, twelve, thirteen, fourteen, fifteen, sixteen. So, that's convenient if you want to measure in eighths, because eight is half of sixteen, so it'll be easy to convert. So, if I wanted to measure something that was at, let's say, this point right here. Let's say I measured something and it ended right here. What I'm going to do is just count the notches and put that number over sixteen. So, I have one, two, three, four, five, six, seven, eight, nine, ten. So, this measurement would be one and ten over sixteen. Now, if you want to measure this in eighths, all you have to do is convert this fraction so that eight is the denominator. And the way to do is, you notice that to get from sixteen to eight, you just cut it in half. So, whatever the numerator is, you do the same thing. You cut it in half, and make it five. So, that point right there becomes one and five-eighths. So, if you want to measure in eighths, just count the notches in between, if it's a ruler that's split into sixteen. Write it as a fraction over sixteen, and cut the numerator in half, and then you'll have it in eighths. My name is Marija, and I just showed you how to measure in eighths on a ruler.

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