Skip to content
Start free
Start My 3 Free Days $0 today · cancel anytime

4th Grade Decimals Resources

8 4th grade decimals resources: 3 test prep, 3 assessments, 3 workbooks and more. How teachers use these

4th Grade Decimals Resources

8 4th grade decimals resources: 3 test prep, 3 assessments, 3 workbooks and more. How teachers use these

Workbook
Workbook4th GradeFlorida FAST 4th Grade Math Practice Test Workbook

A Florida FAST 4th grade math practice test workbook for teachers, with a pretest, skill practice for all 39 benchmarks, mixed review and 2 full-length practice tests. Answer key included, so test prep is ready to go.

4th GradeMathExpressions & EquationsTest Prep
Activity
Activity4th GradeDecimal Campout Activity

This Decimal Campout activity has 4th and 5th Grade students match models, fractions and decimals with denominators of 10 and 100. Answer key included.

4th GradeMathDecimalsActivities
Activity
Activity4th GradeDealing Decimals Activity

In this Dealing Decimals Activity, students compare two decimals to hundredths by reasoning about their size using the symbols >, <, or = by playing War!

4th GradeMathDecimalsActivities
Workbook
Workbook4th GradeSmarter Balanced (CAASPP / SBAC) 4th Grade Math Practice Test Workbook

A Smarter Balanced (CAASPP / SBAC) 4th grade math practice test workbook for teachers, with a pretest, skill practice for all 38 standards, mixed review and 2 full-length practice tests. Answer key included, so test prep is ready to go.

4th GradeMathExpressions & EquationsTest Prep
Workbook
Workbook4th GradeNew Jersey NJSLA-A 4th Grade Math Practice Test Workbook

A NJSLA-A 4th grade math practice test workbook for teachers, with a pretest, skill practice for all 30 standards, mixed review and 2 full-length practice tests. Answer key included, so test prep is ready to go.

4th GradeMathExpressions & EquationsTest Prep
Worksheet
Worksheet4th GradeConverting Decimals Worksheet

This converting decimals worksheet gives 4th grade students practice writing tenths and hundredths as fractions and decimals, with an answer key included to make checking fast and build confidence.

4th GradeMathDecimalsWorksheets
Common Core Lesson
Common Core Lesson4th Grade4.NF.6 Fourth Grade Common Core Lesson

In this 4.NF.6 Fourth Grade Common Core Lesson, students convert between decimals and fractions when the denominator is 10 or 100.

4th GradeMathDecimalsCommon Core Lessons
Common Core Lesson
Common Core Lesson4th Grade4.NF.7 Fourth Grade Common Core Lesson

In this 4.NF.7 Fourth Grade Common Core Lesson, students compare two decimals to hundredths by reasoning about their size using the symbols>, =, or < by playing War!

4th GradeMathDecimalsCommon Core Lessons
From our teachers' playbook

Tenths, hundredths and a tiny dot

What do 4th graders learn about decimals?

In 4th grade, decimals arrive as a new way to write fractions with 10 or 100 on the bottom. Kids learn that 3/10 = 0.3 and 62/100 = 0.62, and they read them out loud the fraction way: "sixty-two hundredths." They place decimals on a number line, shade them on tenths and hundredths grids, and compare them with >, < and =. They also learn a classic trap: 0.5 is bigger than 0.45, even though 45 looks bigger than 5. The click moment comes when a child sees that 0.5 and 0.50 are the very same amount, just cut into different-sized pieces.

Our favorite ways to teach decimals in 4th grade

Decimals click when kids connect them to fractions and to money. These moves build that bridge.

Fraction first, decimal second

Shade 7 squares on a hundredths grid and write 7/100 together. Then show the decimal, 0.07, and read both aloud. Modeling the same amount in two ways helps 4th graders see that a decimal is just a fraction in a new outfit.

Why it works: showing first, practicing together, then letting kids try alone is the "gradual release" model teachers have relied on for decades (Pearson and Gallagher, 1983).

4.NF.6 Fourth Grade Common Core LessonTry it with4.NF.6 Fourth Grade Common Core LessonCommon Core LessonsOpen it →

Deal and build decimals

Kids draw digit cards and build the biggest and smallest decimals they can, then place them on a number line. Building with cards makes place value to the right of the dot something they can move and test.

Why it works: going from real objects to pictures to symbols is a core recommendation of the U.S. Department of Education's elementary math guide.

Dealing Decimals ActivityTry it withDealing Decimals ActivityActivitiesOpen it →

Mix decimals into review

Sprinkle decimal questions into weekly math review alongside fractions and money problems. Switching between them helps kids decide which strategy to use, and it keeps decimals fresh long after the unit is over.

Why it works: shuffled practice teaches kids to choose the right strategy, not just repeat one, and it improved test scores in research (Rohrer and Taylor, 2007).

Florida FAST 4th Grade Math Practice Test WorkbookTry it withFlorida FAST 4th Grade Math Practice Test WorkbookAssessmentsOpen it →

Make it feel like play

Decimal games with a little adventure mixed in.

Decimal Campout ActivityActivities

Decimal campout

Solve decimal challenges to earn supplies for a pretend camping trip.

Open Decimal Campout Activity →Converting Decimals WorksheetWorksheets

Money match

Turn coins into decimals: 3 dimes and 4 pennies is 0.34 of a dollar.

Open Converting Decimals Worksheet →4.NF.7 Fourth Grade Common Core LessonCommon Core Lessons

Who is bigger?

Compare pairs of decimals and explain your thinking with a grid drawing.

Open 4.NF.7 Fourth Grade Common Core Lesson →

What's on this page

3 Test Prep3 Assessments3 Workbooks2 Activities2 Common Core Lessons1 Worksheet

Teacher favorites right now: Florida FAST 4th Grade Math Practice Test Workbook, Decimal Campout Activity and Dealing Decimals Activity.

4th grade decimal questions

What decimals do 4th graders learn?

Fourth graders work with tenths and hundredths. They write fractions with denominators of 10 and 100 as decimals, compare decimals and place them on a number line.

How do I explain decimals to my child?

Use money! A dollar is one whole, a dime is one tenth (0.10) and a penny is one hundredth (0.01). Kids already understand money, so decimals feel familiar right away.

Why do kids think 0.45 is bigger than 0.5?

They treat the digits after the dot like whole numbers. Showing both on a hundredths grid, or as 45 cents and 50 cents, makes it clear that 0.5 is bigger.

Do 4th graders add and subtract decimals?

Mostly not yet. In 4th grade they add fractions with 10 and 100 as denominators, and full decimal adding and subtracting usually comes in 5th grade.

Keep exploring

4th Grade Math ResourcesDecimals Resources5th Grade Decimals Resources

Written by the Have Fun Teaching team of elementary teachers and homeschoolers. Research: Pearson, P. D., & Gallagher, M. C. (1983). The instruction of reading comprehension. Contemporary Educational Psychology, 8(3). U.S. Department of Education, What Works Clearinghouse (2021). Assisting Students Struggling with Mathematics: Intervention in the Elementary Grades. Rohrer, D., & Taylor, K. (2007). The shuffling of mathematics problems improves learning. Instructional Science, 35(6).