Eureka Math² Grade 4, Module 4: Fraction Concepts and Equivalence
In this unit, your child deepens their understanding of fractions. They show why fractions like 3/4 and 6/8 are equivalent, compare fractions with different denominators, and rename tenths as hundredths to add them. It follows the word-problem unit and leads into adding, subtracting, and multiplying fractions.
By Robert “Bobby” BarnettMath teacher, parent, and founder of Bobby’s Math Club
What is my child learning in Module 4?
- Using area models and number lines to show that fractions like 2/5 and 4/10 name the same point. Learn more: Why fractions like 3/4 and 6/8 are equal
- Comparing fractions by renaming them with a common denominator, like 2/3 = 4/6 against 5/6. Learn more: Comparing fractions like 2/3 and 5/6
- Writing tenths as hundredths, like 7/10 = 70/100, and adding tenths and hundredths together. Learn more: Adding tenths and hundredths together
Sample questions to try together
These are real questions from our practice. Tap the speaker to hear one read aloud, or the light bulb for a hint, and talk about the answer together.
Question 1 of 3
What is the missing number? 4/5 = ?/10
- 4
- 9
- 8
How you can help
- Fold two same-size paper strips, one into thirds and one into sixths. Shade 2/3 and 5/6, line them up, and ask your child which is longer and why.
- Draw a 10-by-10 grid and shade 7 columns. Ask your child to name it as 7 tenths and as 70 hundredths, then shade 5 more small squares and name the total.
- Compare two same-size glasses at dinner, one 2/3 full and one 3/6 full. Ask your child which holds more, and how renaming 2/3 as 4/6 settles it.
Where kids can get stuck
- Doubling only the denominator, so 1/2 becomes 1/4 when renamed to compare with 3/4.
- Using the multiplying rule without being able to draw why 2/5 and 4/10 are the same amount.
- Thinking 4/100 is larger than 3/10 because both its numbers are bigger.
Practice makes perfect
Bobby's Math Club has practice problems that adapt to your child’s level, each with a detailed explanation and an easy-to-follow video, so your child can build confidence in these skills one step at a time.
Words your child will hear
- numerator
- The top number of a fraction, telling how many equal parts are counted.
- denominator
- The bottom number of a fraction, telling how many equal parts make one whole.
- equivalent fractions
- Fractions that name the same amount, like 3/4 and 6/8.
- common denominator
- The same denominator shared by two fractions, which makes them easy to compare or add.
- tenth
- One of 10 equal parts of a whole, written 1/10 or 0.1.
- hundredth
- One of 100 equal parts of a whole, written 1/100 or 0.01.
- number line
- A line with numbers at equal distances, used to show and compare amounts.
Ready to build your child’s confidence with fraction equivalence?
In Bobby's Math Club, your child practices these skills at just the right level, with a hint when they need one, a clear explanation after every question, and kid-friendly videos. Unlimited practice is free.
Join the club
Written by Robert “Bobby” Barnett
Bobby is an award-winning math teacher, the author of Meet Every Learner’s Needs, and the father of two elementary-school math learners. He uses Bobby’s Math Club with his own kids a few times every week. Learn more or contact Bobby.
Which math standards does Eureka Math² Grade 4 Module 4 cover?
Eureka Math² Grade 4 Module 4 covers these math standards. Each one links to what it means, sample questions, and teaching strategies.
For teachers: Unit names and order vary between editions and districts, so your school’s own materials have the exact sequence. Learn how Bobby's Math Club can help your students grow.