Decimals Teaching Resources
Browse decimal worksheets, games and more Australian curriculum V9 resources created by primary teachers for your primary classroom!
Explore editable resources you can easily differentiate for individual learners plus maths rotations activities and engaging games to help students learn how to read and write decimals using place value and the decimal point, how to convert a decimal to a fraction and more.
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 — a 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 your students to simplify numbers, making them easier to work with!
This will be useful 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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Dividing with Decimals – Word Problem Task Cards
Sharpen decimal division skills while solving a variety of word problems with this set of 24 task cards.
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Comparing and Ordering Decimals Interactive Activity
Get students to compare and order decimals this supermarket-themed interactive digital resource, perfect for lesson introductions and wrap-ups.
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Dividing Decimals Match-Up Activity
Divide decimals and find the correct quotient with this match-up activity.
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Multiplying with Decimals – Differentiated Worksheets
Strengthen computation skills with this set of decimal multiplication worksheets.
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Dividing Decimals Bingo
Master the ability to divide with decimals by playing a whole-class bingo game.
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Multiplying Decimals Bingo
Solve for products of decimals to the hundredths place with a whole-class bingo game.
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Dividing Decimals Task Cards
Sharpen decimal division skills with this set of 24 task cards.
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Multiplying Decimals Task Cards
Get your students multiplying decimals by decimals and whole numbers with this set of 24 task cards perfects for maths rotations.
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Multiplying Decimals Maths Mazes
Complete decimal multiplication problems while finding your way through this set of three math mazes.
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Dividing Decimals Maths Mazes
Review how to divide a decimal by a decimal and a whole number with this set of maths mazes.
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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 maths rotations.
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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 maths rotations.
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Representing Decimals – Interactive Picture Reveal
Use this decimal game for Year 4 to teach your students all the ways that decimals can be visually represented.
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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 Year 4 maths worksheets.
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Dividing Decimals by Whole Numbers Teaching Slides
Teach your students how to divide decimals by whole numbers using visual models and the standard algorithm using this step-by-step teaching presentation.
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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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Multiplying Decimals by Decimals Worksheet Pack
Download these multiplying decimals by decimals worksheets to provide your students with practice using visual models, area models and the standard algorithm.
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Multiplying Decimals by Decimals Teaching Slides
Teach your students how to multiply decimals by decimals using three different strategies using this step-by-step teaching presentation for Year 7 students.
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Relating Decimals and Fractions Worksheet
Practise matching fractions with a denominator of 10 and 100 to decimals and vice versa.
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Fractions and Decimals Matching Game
Practise matching equivalent fractions and decimals with this set of 15 cards that focus on tenths and hundredths place values.
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Decimal War Board Game
Compare decimals by means of numerals, words and Base 10 block representations with this printable board game.
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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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Patterns in Place Value Worksheet
Use this place value worksheet to get your students analysing decimal place value in numbers.
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Patterns in Place Value Teaching Slides
Strengthen student understanding of decimal place value and the relationship between place value positions with this instructional slide deck.
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Comparing and Ordering Decimals Posters
Display different strategies for comparing and ordering decimals with this set of posters.
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Adding and Subtracting Decimals – Word Problem Task Cards
Have students solve decimal word problems with this set of 16 task cards, perfect for math centers.
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Comparing and Ordering Decimals Task Cards
Have students practise comparing and ordering decimals to the thousandths place with this set of 16 task cards.
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Adding and Subtracting Decimals – Differentiated Mystery Image Worksheets
Have students practise adding and subtracting decimals with this mystery image worksheet.
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Converting Fractions and Decimals Match-Up Activity
Have students practise how to convert a fraction to a decimal with this match-up activity perfect for maths rotations.
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Decimal Place Value – Digital and Printable Worksheet
Get students analysing decimal place value positions with this “This or That?” worksheet.
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Decimal Number Patterns – Differentiated Worksheets
Practise determining a pattern and next value in a numerical sequence of decimals to the hundredths place.