How to Teach Kids about Rounding Money

By Tori Filas

You may have heard the news: The U.S. is eliminating the penny. While pennies will still be accepted for now, stores that accept cash payments will begin rounding totals to the nearest nickel (five cents).

Credit card and digital payments will still be charged to the exact cent — but when kids hand over cash at a store, rounding will come into play.

At first, this might sound confusing. After all, most of us learned to round to the nearest ten, not the nearest five. But here’s the good news: This change creates a real-world, everyday opportunity to help kids understand rounding in a way that actually makes sense.

What does “rounding to the nearest nickel” mean?

When paying with cash, prices won’t change — only the final total will be rounded. Here’s how rounding will typically work at the register:

How Rounding Works
Total ends in:	Cash total:
1¢ or 2¢	Rounds down to 0¢
3¢ or 4¢	Rounds up to 5¢
5¢	Stays the same
6¢ or 7¢	Rounds down to 5¢
8¢ or 9¢	Rounds up to 10¢

For example:

$2.72 $2.40
$3.74 $3.75
$6.98 $7.00

This kind of rounding is already used in other countries, and kids tend to catch on quickly — especially when they can connect it to something tangible like money.

Why rounding with real money is a great teaching moment

Rounding can feel abstract when it’s just numbers on a worksheet. But money is something kids see, touch, and use. When rounding determines whether they need one more coin or not, the concept suddenly becomes meaningful.

The penny change gives parents and teachers a natural way to say, “Let’s estimate. Which number is this closest to?”

And that’s exactly the thinking schools are already trying to build.

How kids learn rounding in school (by age)

Rounding is introduced gradually as kids develop number sense and place value understanding. Here’s a general breakdown of what rounding looks like across grade levels:

Ages 6-7 (Grades 1-2)

Understanding ones and tens
Comparing numbers (greater than / less than)
Early estimating using number lines
Informal rounding through real-life examples (like money)

Ages 7-9 (Grades 3-4)

Rounding to the nearest 10 and nearest 100
Learning the “look at the digit to the right” rule
Using number lines to justify rounding decisions
Applying rounding to word problems

Ages 9-11 (Grades 4-5)

Rounding larger numbers (up to thousands)
Rounding decimals, especially in money contexts
Estimating totals and checking if answers are reasonable

Rounding to the nearest nickel fits neatly into this progression — it’s just rounding to a different “benchmark.”

Our favorite ways to help kids visualize and remember rounding

If rounding has ever felt tricky for your children or students, these strategies can make it click:

1. The Roller Coaster: Picture a number riding a rollercoaster:

If it hasn’t reached the halfway point, it rolls back.
If it makes it halfway or more, it keeps going up, and then rolls on to the next largest number.

This works beautifully for rounding to 5, 10, or 100.

2. The Rounding Rhyme: “Four or less, let it rest. Five or more, raise the score!”

This classic rhyme helps kids remember when to round up or down, whether they’re rounding to tens.

3. The Number Line: A number line makes rounding visual and logical:

Put the number on the line.
Identify the two closest “friendly” numbers (like 15¢ and 20¢).
Ask, “Which one is closer?”

This is especially helpful when introducing five-cent rounding for the first time.

Practice makes it stick

To help kids connect rounding rules to real-life money situations, we created a printable worksheet (PDF) that reinforces rounding rules.

Whether you’re a parent practicing at home or a teacher connecting math to financial literacy, this small change in how we pay can lead to big learning gains.

Last Updated: February 12, 2026

Tori Filas

With 27 years in education under her belt, Tori Filas is an accomplished teacher passionate about helping students

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