Reveal Math Grade 4, Unit 3: Multiplication
In this unit, your child multiplies up to four-digit numbers by one-digit numbers and two-digit numbers by two-digit numbers, using place value, area models, and partial products. They also learn that multiplication can compare amounts, as in "3 times as many." It follows addition and subtraction and leads into division.
By Robert “Bobby” BarnettMath teacher, parent, and founder of Bobby’s Math Club
What is my child learning in Unit 3?
- Multiplying with area models and partial products, from problems like 5 × 1,234 to 37 × 52, and estimating to check. Learn more about multiplying large numbers by a one-digit number: Multiplying large numbers by a one-digit number · Learn more about multiplying two two-digit numbers
- Turning a multiplication equation into a comparison statement, such as 42 = 6 × 7 meaning 42 is 6 times as many as 7. Learn more: Reading multiplication as "times as many"
- Using bar models and equations to solve comparison problems, telling "times as many" problems apart from "more than" problems. Learn more: Story problems about "times as many"
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
Beads come in bags of 125. Jamal buys 6 bags to make bracelets. How many beads does he get?
- 620
- 750
- 625
How you can help
- Compare amounts at home: if you borrowed 4 library books and your child borrowed 3 times as many, ask how many they have and to say the comparison aloud.
- Find a total with partial products, such as 6 packs of 125 sheets of paper, splitting 125 into 100, 20, and 5.
- Ask whether a product sounds right: 37 × 52 should be near 40 × 50, or 2,000, so an answer like 300 needs another look.
Where kids can get stuck
- Multiplying only tens by tens and ones by ones, so 37 × 52 misses the 30 × 2 and 7 × 50 parts.
- Adding instead of multiplying, so 4 times as many as 5 becomes 9 instead of 20.
- Writing 30 × 50 as 150 instead of 1,500, treating the tens as ones inside a partial product.
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
- factor
- A number multiplied by another number to make a product, like 4 and 6 in 4 × 6 = 24.
- product
- The answer to a multiplication problem.
- partial products
- The smaller answers found by multiplying each part of a number, which are then added together.
- area model
- A rectangle split into parts by place value, used to multiply or divide.
- distributive property
- Multiplying each part of a split number, then adding: 6 × 47 = 6 × 40 + 6 × 7.
- times as many
- A way to compare by multiplying: 12 is 3 times as many as 4.
- comparison
- A statement about how two amounts relate, such as one being 5 times as many as another.
- equation
- A number sentence with an equal sign showing two amounts are the same, like 35 = 5 × 7.
Ready to build your child’s confidence with multiplication and comparisons?
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.
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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 Reveal Math Grade 4 Unit 3 cover?
Reveal Math Grade 4 Unit 3 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.