What Are the Rounding Steps in Math?

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Rounding in math is a lot easier if you turn it into a step by step process. Learn about the rounding steps in math with help from an experienced mathematics educator in this free video clip.

Part of the Video Series: Elementary Math
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Video Transcript

Hi, my name is Marija, I'm a mathematician, and today I'm going to show you the rounding steps in math. So, the first thing you need to know is which place are rounding to. So let's say we had the number round 4.3876 to the nearest tenth. Okay. So this is important. We need to know where are we rounding to? So what you're gonna do is go ahead and identify that place. So in the number 4.3876, the tenths place is the number 3, right? The tenths place is the number immediately following the decimal. So, the place that you have to round to, you're gonna go ahead and look at the number next to it, on the right side. If that number is 5 or greater, then the number that you have to round to is gonna go up one. 8 is greater than 5, it's 5 or greater, so the 3 is actually gonna turn into a 4. I'm gonna keep everything to the left the same, so I'm gonna bring down the 4., change the 3 to a 4, and everything to the right goes away or becomes zeroes. So, go to your place value, which is the tens place, look to right of it. If that number's 5 or more, the number becomes one up. If it was less than 5, the number would stay the same, it would not go down. Everything to the left stays the same, everything to the right disappears or becomes a zero, okay? Now, if we were rounding and, let's do one where it stays the same. If I had the number 5.213, and I was asked to round to the tenths place, I go to my place value, which is the 2. I look to the right of it, because the 1 is less than 5, the 2 stays the same. Okay? Again, everything to the left stays the same, 2 stays the same, and everything to the right just becomes a 0, or goes away. My name's Marija, and I just gave you the rules for rounding.


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