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.
- Plus Plan
Place Value Chart with Decimals
Display this place value chart in your classroom to remind your students of place value from millions to millionths.
- Plus Plan
Year 5 - Decimal Place Value Assessment
Assess your students' skills with decimals and place value using a printable Year 5 Decimal Place Value Test.
- Plus Plan
Using the Decimal Number Line (Tenths and Hundredths) Teaching Slides
Teach your students how to identify, order, and label decimals on a number line with an interactive teaching presentation.
- Free Plan
Comparing and Ordering Decimals Worksheet
Get students comparing and ordering decimals to the thousandths place with this printable worksheet.
- Plus Plan
Roll and Round Dice Game Set of 7 Rounding Games
Help your student refine their rounding skills with this set of 7 printable maths games.
- Plus Plan
Interactive Maths Review – Activities for Years 5, 6 and 7
Review important maths concepts covered in years 5, 6 and 7 with a student-led interactive activity.
- Plus Plan
Introducing Decimal Numbers Teaching Slides
Help students understanding decimal place value and the relationship between fractions and decimals with this comprehensive teaching presentation.
- Free Plan
Multiplying Decimals – Word Problem Task Cards
Solve a variety of word problems by multiplying decimals with this set of 24 task cards.
- Plus Plan
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.
- Plus Plan
Decimal Place Value – Digital and Printable Worksheet
Get students analysing decimal place value positions with this “This or That?” worksheet.
- Plus Plan
Place Value Banner - Billions to Thousandths
A banner that displays extended place value.
- Plus Plan
Year 5 Fractions and Decimals Worksheets
Use these fractions and decimals worksheets in your Year 5 classroom for independent practice or as an assessment activity.
- Plus Plan
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.
- Plus Plan
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.
- Plus Plan
Decimal Exit Tickets (Place Value, Rounding, Ordering and Computation)
Assess student understanding of decimal place value, rounding, ordering and computation with this set of 21 exit tickets.
- Free Plan
Fraction, Decimal and Percentage Bingo
Convert between fractions, decimals and percentages with this engaging Bingo game the whole class can enjoy!
- Free Plan
Dividing Decimals Bingo
Master the ability to divide with decimals by playing a whole-class bingo game.
- Free Plan
Decimal Notation Puzzles
Practice expanded notation, word form and standard form using decimals with this set of 13 three-piece puzzles.
- Plus Plan
Diving Into Decimals Interactive Game
Use this interactive activity to take a deep dive into decimals while improving skills with decimal operations and place value concepts.
- Plus Plan
Comparing and Ordering Decimals Worksheet for Year 5
Practise using number lines to compare and order decimals with this worksheet.
- Free Plan
Fractions, Decimals and Percentages Polygon Puzzle
A puzzle using fractions, decimals and percentages.
- Plus Plan
Year 6 Fractions, Decimals and Percentages Worksheets
Use these fractions, decimals and percentages worksheets in your Year 6 classroom for independent practice or as an assessment activity.
- Plus Plan
Decimals and Percentages Assessment
Assess students' knowledge of various decimals and percentages concepts with this four-page worksheet.
- Free Plan
Multiplying with Decimals – Differentiated Worksheets
Strengthen computation skills with this set of decimal multiplication worksheets.
- Free Plan
Dividing Decimals Maths Mazes
Review how to divide a decimal by a decimal and a whole number with this set of maths mazes.
- Plus Plan
Decimal War Board Game
Compare decimals by means of numerals, words and Base 10 block representations with this printable board game.
- Plus Plan
Comparing and Ordering Decimals Posters
Display different strategies for comparing and ordering decimals with this set of posters.
- Plus Plan
Decimal Place Value Game – Find A Decimal Who...
Explore decimal place value with your students using an interactive whole-class game.
- Free Plan
Dividing with Decimals – Differentiated Worksheets
Download this set of differentiated dividing decimals worksheet to help your students practice this key maths skill.
- Plus Plan
Comparing Decimals — Year 5 Bump Game
Compare decimals through the thousandths place with a comparing decimals game designed for year 5 students.
- Plus Plan
Decimals on Number Lines – Codebreaker Worksheets
Crack the number line code with worksheets practising identification, addition, and subtraction of decimal numbers.
- Free Plan
Fraction, Percentage and Decimal Word Wall Vocabulary
Print your own fraction, percentage and decimal vocabulary for use on a maths word wall.