Eureka Math Grade 3, Module 5: Fractions as Numbers on the Number Line
In this unit, your child learns fractions by splitting shapes, strips, and number lines into equal parts. They name unit fractions like 1/4, build other fractions from them, place fractions on a number line, and compare fractions to find which are equal or greater. Area from the last unit helps here, and data and graphs come next.
By Robert “Bobby” BarnettMath teacher, parent, and founder of Bobby’s Math Club
What is my child learning in Module 5?
- Building fractions from unit fractions, so 3/4 is three copies of 1/4, using paper strips and drawings. Learn more: What a fraction like 3/4 means
- Marking fractions on a number line by splitting each whole into equal lengths, including points like 3/2 past 1. Learn more: Fractions on a number line
- Comparing fractions with the same numerator or denominator and finding equal ones, such as 3/3 = 1 and 2/4 = 1/2. Learn more about finding equal fractions, like 1/2 = 2/4: Finding equal fractions, like 1/2 = 2/4 · Learn more about comparing fractions by size
- Partitioning shapes, splitting them into parts with equal area, and naming each part, like 1/6 of a rectangle. Learn more: Splitting shapes into equal parts
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
Tariq is painting this paper strip blue for a class banner. So far he has painted the blue parts. What fraction of the strip does he still need to paint?
- 5/3
- 3/8
- 5/8
How you can help
- Fold a paper strip in half, then in fourths, then in eighths, and ask your child which fold lines name the same point.
- Talk about distance on a walk, such as saying you are halfway to the corner, and ask where one fourth of the way would be.
- Break a granola bar into 4 equal pieces and ask how many pieces make 1/2, then how many make the whole bar.
Where kids can get stuck
- Drawing unequal spaces on a number line, so the fractions land in the wrong places.
- Writing the number of parts instead of a fraction, such as 4 instead of 1/4.
- Calling 4 uneven pieces fourths, without checking that each piece is the same size.
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
- unit fraction
- A fraction for one equal part, like 1/3 or 1/8.
- numerator
- The top number of a fraction; it tells how many equal parts we have.
- denominator
- The bottom number of a fraction; it tells how many equal parts make the whole.
- number line
- A line with numbers placed in order at equal spaces.
- partition
- To split a shape or a line into equal parts.
- equivalent fractions
- Fractions that name the same amount, like 1/2 and 2/4.
- whole
- The entire shape, object, or group before it is split.
- interval
- The space between two marks on a number line.
Ready to build your child’s confidence with fractions on a number line?
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 Math Grade 3 Module 5 cover?
Eureka Math Grade 3 Module 5 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.