Decimals Teaching Resources
Browse decimal worksheets, math center activities, engaging games and more fun ways to bring this concept to life in your elementary classroom.
This teaching resource collection was created by the teachers on the Teach Starter team and includes activities to help students learn to convert fractions into decimals and vice versa, as well as printables that will help them learn how to read and write decimals using place value and the decimal point, how to round decimals and more!
Build students' understanding of using decimals in money and measurement with curriculum-aligned teaching resources so you can meet Common Core and state standards.
New to this concept in the math classroom, or just looking for some fresh ideas for teaching about decimals? Explore a primer from the teachers on the Teach Starter team!
What Are Decimals? A Kid-Friendly Definition
Explaining decimals to your class? Here's a kid-friendly definition that will help!
A decimal is a special way to write parts of a whole number. Decimals are a lot like fractions, but instead of using numbers like 1/2 or 1/4, we use a dot called a decimal point to separate the whole number part from the part that is less than one.
The number before the decimal tells you how many wholes you have, and the digits after the decimal point tell you how many groups of one-tenth, one-hundredth or one-thousandth you have.
One of the most common places students will encounter decimals in real life is when using money — the dollar is a whole number, while cents are a part of the whole and are typically represented beyond a decimal point.
How Do You Turn a Decimal Into a Fraction and Vice Versa?
Turning decimals into fractions and doing the reverse are both important skills for students to develop. Here are simple processes for doing just that!
How to Turn a Decimal Into a Fraction
- Write down the digits in the decimal over its place value.
- For example, if you have the decimal 0.75 (seventy-five hundredths), you would write it as 75/100.
- Simplify the fraction by finding the greatest common factor (GCF) of the numerator and denominator and dividing both by it.
- In the example above, the GCF of 75 and 100 is 25, so dividing both by 25 gives you the simplified fraction 3/4. This means 0.75 as a fraction is 3/4.
How to Turn a Fraction Into a Decimal
To turn a fraction into a decimal, your students will need to divide the numerator (top number) by the denominator (bottom number).
- Divide the numerator by the denominator.
- If the numerator does not divide evenly by the denominator, add zeroes to the dividend to continue the division to as many decimal places as needed or desired. Don't forget to add a decimal point after the digit found in the denominator!
- Round the decimal to the desired number of decimal places, if necessary.
How Do You Round Decimals?
Another skill students need to learn is the process of rounding decimals to the nearest whole number or to a specific decimal place. This will allow them to simplify numbers, making them easier to work with! This comes in handy when doing things such as rounding to the nearest dollar amount when working with money.
Rounding can also be used to get a general sense of a number without worrying about the exact value, which can be helpful in certain situations, such as estimating a budget or measurement.
To round a decimal to the nearest whole number, you need to look at the digit to the right of the decimal point.
- If that digit is 5 or greater, you round up to the next whole number.
- If that digit is 4 or less, you round down to the current whole number.
For example, let's say you want to round the decimal 3.7 to the nearest whole number. The digit to the right of the decimal point is 7, which is 5 or greater, so you round up to 4.
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Multiplying Decimals – Word Problem Task Cards
Solve a variety of word problems by multiplying decimals with this set of 24 task cards.
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Decimal Operations Worksheet
Get students applying the four operations to decimal numbers with this set of two math worksheets.
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Describe That Decimal Worksheet
Explore the place value of decimals with this versatile one-page printable worksheet.
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Decimal War Card Game
Get your students comparing decimals with this fun card game for two players.
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Relating Decimals and Fractions Worksheet
Practice matching fractions with a denominator of 10 and 100 to decimals and vice versa.
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Fractions, Decimals and Percentages Worksheets
Use these fractions, decimals and percentages worksheets in your upper elementary classroom for independent practice or as an assessment activity.
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Math Mazes (Equivalent Fractions, Decimals, and Percentages)
Determine equivalent fractions, decimals, and percentages with this puzzling math maze.
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Representing Hundredths Worksheet
Have students demonstrate their understanding of hundredths with this simple one-page worksheet.
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Multiplying with Decimals Bingo Game
Get your students multiplying decimals by whole numbers with this engaging Bingo game.
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Estimating Decimal Sums and Differences – Worksheet
Refine rounding skills with an estimating decimal sums and differences worksheet.
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Comparing and Ordering Decimals Worksheet
Get students comparing and ordering decimals to the thousandths place with this printable worksheet.
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Complex Dot-to-dot Worksheet – Ordering Fractions and Decimals (Cat)
Practice ordering fractions and decimals with this complex dot-to-dot worksheet.
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Rounding Decimals – Worksheet for 5th Grade
Practice rounding decimals to the nearest tenths and hundredths place with this worksheet.
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Converting Decimals, Fractions, and Percentages – Worksheet
Strengthen your students’ understanding of how to convert a percent to a decimal and a fraction with this worksheet.
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Expanded Notation Puzzles - Decimals
Practice expanded notation using decimals and whole numbers with this set of 28 puzzle pieces.
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5th Grade Decimal Operations Assessment
Assess student understanding of adding, subtracting, multiplying, and dividing decimals with this math assessment.
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Fractions and Decimals Assessment
Assess students' knowledge of various decimals and percentages concepts with this four-page worksheet.
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Tenths and Hundredths as Decimals Worksheet Pack
Get your students representing tenths and hundredths as decimals using concrete models, visual models and money with this set of 4th grade math worksheets.
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Dividing Decimals by Whole Numbers Worksheet Pack
Download these dividing decimals by whole numbers worksheets to provide your students with practice using visual models and the standard algorithm.
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Subtracting Decimals With Base-10 Blocks – Teaching Slides for 5th Grade
Teach your students how to use base-10 blocks to model decimal subtraction problems with this set of teaching slides.
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Lost in Decimal Woods - Decimal Number Line Interactive
Recognize and analyze decimals on a number line with an exciting self-checking interactive game.
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Decimal Patterns – Math Mazes
Find your way through this set of math mazes by determining the addition or subtraction pattern in a sequence of decimal numbers.
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Multiplying Decimals Math Mazes
Complete decimal multiplication problems while finding your way through this set of three math mazes.
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Naming Decimals Worksheet
Get students applying decimal place value skills to represent numbers to the thousandths place in standard, word and expanded form.
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Decimals and Percentages Assessment
Assess students' knowledge of various decimals and percentages concepts with this four-page worksheet.
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Comparing and Ordering Decimals Interactive Activity
Get students to compare and order decimals this grocery-themed interactive digital resource, perfect for lesson introductions and wrap-ups.
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Representing Decimals with Visual Models Task Cards
Explore visual representations of decimals with your students using this set of 24 task cards perfect for math centers.
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Comparing Decimals with Visual Models Task Cards
Get students comparing and ordering decimals using visual models with this set of 24 task cards perfect for math centers.
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Representing Decimals – Interactive Picture Reveal
Use this decimal game for 4th grade to teach your students all the ways that decimals can be visually represented.
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Rounding Numbers With Decimals – Teaching Slides and Worksheet for 5th Grade
Teach your students how to round to the nearest whole number, tenth and hundredth with this set of teaching slides and accompanying worksheet.
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Comparing Decimals – Bump Game
Compare decimals through the thousandths place with a comparing decimals game designed for 5th-grade students.
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Decimals on a Number Line (Tenths and Hundredths) Slide Deck
Teach your students how to identify, order, and label decimals on a number line with an interactive teaching presentation.