Rounding to the Nearest Ten: 4 Powerful Teaching Strategies

Rounding to the nearest ten can be such a challenging concept for upper grade students, especially when students are not yet secure with place value.

And when we get to rounding those three-digit numbers to the nearest ten it can be very daunting…for students and teachers alike!

But before I share my favorite rounding strategies, I must confess.

Years back, I was always quick to just show the rules for rounding and move on. You know, underline to the digit to the right…if it’s 5 or more, round up…4 or less, round down.

It’s easy right? Just remember the rules.

But (not surprisingly) the concept only stayed with some of my students, while others were left confused.

And even worse: I was missing a HUGE opportunity to build more place value understanding while teaching rounding concepts.

These days, I rely on scaffolded, hands-on rounding lessons based on place value. 

Now my students are able to round to the nearest ten automatically, not using rules they’ve been told…but based on true number sense and place value understanding. 

And I want to share the four strategies that have made a great difference in my teaching practice.

And more importantly, in my students’ understanding.

Start with Number Paths

Number paths are generally used in the younger grades, but I have found them to be SO helpful in rounding to the nearest ten with upper-elementary students.

Why number paths?

These organized little paths make it easy to set up (and visualize) the two tens a given number lies between:

Number paths also help students see the the proximity of the closest ten, by showing how many “spaces” away the given number is:

And my favorite thing about number paths: they make it very easy for students to understand and locate midpoint numbers:

I embed number paths into our rounding lessons as we launch the concept and in our practice sheets as well.

Once my students are comfortable with the basics of rounding to the nearest ten on number paths, we take it to the next level.

I love to use double number paths to help my students find patterns in rounding to the nearest ten with two different two-digit numbers…as well as related two-digit and three-digit numbers:

I set up our number paths on a line with arrows, so my students will make the connection when we move from the paths to open number lines:

Represent Numbers with Place Value Disks

Before we start rounding numbers to the nearest ten, we always represent each given number with place value disks.

These are one of our most-used math manipulatives! I have a post sharing how I introduce them to my students here: Introducing Place Value Disk to Students with 4 Guiding Questions.

I cannot tell you enough how helpful these disks are when rounding to the nearest ten. The simple step of representing numbers with place value disks helps students see the tens and ones with ease:

And this is a fantastic support when identifying the tens a given number is between:

If students struggle with place value, they are quickly able to see that the first ten is the same as the tens in the given number:

And then they are able to find the next ten that comes after and build the rest of the number path (or number line).

Discover Rounding Rules with Number Charts

I love to use all kinds of number charts with rounding…but not THOSE rounding charts.

You know the ones I mean, right?

They have a line down the chart separating the numbers with “Round Down” and “Round Up” arrows.

There’s nothing wrong with this chart…but in our quest to round solely based on place value, I’d rather my students come to this realization on their own.

Once my students are comfortable rounding with place value disks and number paths (and number lines) we use charts to explore what we notice about rounding to the nearest ten:

(this chart is from one of the lessons in this rounding math intervention kit)

There’s something so powerful about highlighting related numbers and just asking students what they notice.

(I love asking this question and other open-ended ones to support productive struggle whenever possible!)

These number charts empower students to see patterns, make key observations, and develop their own rules for rounding.

Which is so much more impacting than just being told the rules for rounding to the nearest ten!

Scaffold the Steps

The strategies above have been a huge help in guiding my students to truly understand rounding through place value.

But there is one other strategy that has been key in supporting my students.

Over the years, I’ve learned it’s so important to really break the process down for those students who are not secure in place value concepts.

I rely on scaffolded steps to build understanding and confidence.

I always start with number paths:

Then we move to rounding to the nearest ten on open number lines with marks:

And then rounding on simple open number lines:

We start by focusing on the tens given numbers are between first, then tackle the midpoint (and that rounding rule!) separately.

We then delve into rounding more challenging numbers and generating our own rules for rounding to the nearest ten.

(I use the same sequence when I teach rounding to the nearest hundred, you can see all those strategies here)

I feel so passionately about teaching rounding this way, I’ve created a series of rounding lesson kits. These kits are filled with everything to teach rounding to the nearest ten with scaffolded steps…until students are ready to round automatically, based on place value.

Lesson Plans to Start Now

Ready to dive in and get to the heart of rounding to the nearest ten (and beyond!) through place value?

You won’t need to plan a single thing…