Bridges in Mathematics Grade 3, Unit 7: Extending Multiplication & Fractions
In this unit, your child stretches multiplication to bigger numbers and digs deeper into fractions. They use facts they know to multiply by tens, so 4 × 7 helps with 4 × 70, and they compare fractions by thinking about the size of the parts. Next comes the last unit of the year, with data and graphs gathered from games.
By Robert “Bobby” BarnettMath teacher, parent, and founder of Bobby’s Math Club
What is my child learning in Unit 7?
- Polishing the trickier facts, like 7 × 8 and 6 × 9, so they come quickly without counting. Learn more about knowing the times tables by heart: Knowing the times tables by heart · Learn more about dividing within 100
- Multiplying a one-digit number by a multiple of ten, such as 4 × 70 = 280, by thinking of 4 groups of 7 tens. Learn more: Multiplying by tens, like 4 x 70
- Spotting equivalent fractions, ones that name the same amount like 1/2 and 2/4, and comparing fractions by the size of their parts. 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
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 16 ÷ 2?
- 8
- 7
- 14
How you can help
- Count out dimes in 3 piles of 5, so each pile is 50 cents, and ask how much in all: 3 × 50 = 150 cents, or $1.50.
- Pour rice or dry cereal with measuring cups to show that two 1/4 cups fill exactly the same amount as one 1/2 cup.
- Flip two playing cards at the kitchen table and race to say the product, setting face cards aside and keeping the game light.
Where kids can get stuck
- Multiplying the digits and dropping the tens, writing 4 × 70 = 28 instead of 280.
- Deciding 3/8 is greater than 3/4 because 8 is bigger than 4, forgetting eighths are smaller pieces.
- Mixing up facts that sound alike, such as saying 6 × 8 is 42.
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
- multiple of 10
- A number you say when counting by tens, like 30 or 80.
- factor
- One of the numbers you multiply, like 4 and 6 in 4 × 6.
- product
- The number you get when you multiply two factors.
- equivalent fractions
- Fractions that name the same amount, like 1/2 and 2/4.
- compare
- To decide which number is greater, less, or if they are equal.
- numerator
- The top number in a fraction, counting the parts we are talking about.
- denominator
- The bottom number in a fraction, naming how many equal parts the whole has.
Want to help your child master multiplying by tens and fractions?
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 Bridges in Mathematics Grade 3 Unit 7 cover?
Bridges in Mathematics Grade 3 Unit 7 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.