Go Math! Grade 1, Chapter 7: Compare Numbers
In this unit, first graders compare two-digit numbers using the symbols > (greater than), < (less than), and = (equal to). They compare the tens first, then the ones, and practice reading each comparison aloud. It builds on modeling numbers with tens and ones from the last unit, and comes right before adding and subtracting two-digit numbers next.
By Robert “Bobby” BarnettMath teacher, parent, and founder of Bobby’s Math Club
What is my child learning in Chapter 7?
- Deciding which two-digit number is greater by checking the tens, then the ones, and writing it with >, <, or =. Learn more: Comparing two-digit numbers with >, =, and <
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
Compare 20 and 19. Which is less?
- 20
- 19
- Equal
How you can help
- Compare prices at the store, like 45 cents and 54 cents, and ask which is greater. Then ask your child to say it as a sentence with "greater than."
- Play a quick game with two number cards each: make the biggest two-digit number you can, and compare. Ask your child to write who won with a symbol.
- Pick two ages, page numbers, or house numbers, and ask your child to put them in order from least to greatest.
Where kids can get stuck
- Choosing 39 over 41 because the 9 in the ones place looks bigger.
- Pointing the < symbol the wrong way, writing 62 < 26.
- Saying 62 is greater than 26 but writing 26 > 62.
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
- compare
- Look at two things to see which is bigger, longer, or the same.
- greater than
- The symbol > means the first number is bigger, like 9 > 4.
- less than
- The symbol < means the first number is smaller, like 4 < 9.
- equal to
- The symbol = means two amounts are the same.
- tens
- Groups of ten. In 34, there are 3 tens.
- ones
- Single things not in a group of ten. In 34, there are 4 ones.
Want to help your child master comparing numbers to 100?
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 Go Math! Grade 1 Chapter 7 cover?
Go Math! Grade 1 Chapter 7 covers this math standard. Each one links to what it means, sample questions, and teaching strategies.
- 1.NBT.B.3: Compare two two-digit numbers.
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.