enVision Mathematics Grade 1, Topic 9: Compare Two-Digit Numbers
In this unit, first graders compare two-digit numbers and record the result with the symbols for greater than (>), less than (<), and equal to (=). They check the tens digit first, then the ones. It builds directly on the last unit's tens and ones, and sets up adding tens and ones next, where knowing what each digit is worth matters just as much.
By Robert “Bobby” BarnettMath teacher, parent, and founder of Bobby’s Math Club
What is my child learning in Topic 9?
- Comparing two-digit numbers by looking at the tens first, 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
- Pick two house numbers or page numbers and ask which is greater and how they know. Listen for them to talk about the tens first.
- Play a card game with two cards each to make two-digit numbers; the greater number wins the round. Have your child write it with > or <.
- Draw each symbol as a hungry mouth that opens toward the bigger number, then read each comparison aloud together: "53 is greater than 35."
Where kids can get stuck
- Writing 35 > 53 when they mean that 53 is the bigger number.
- Comparing correctly aloud but writing the numbers in the opposite order.
- Looking at the ones digits first and calling 38 greater than 52.
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 digit
- The digit on the left in a two-digit number; it tells how many tens.
- ones digit
- The digit on the right in a two-digit number; it tells how many ones.
Ready to build your child’s confidence with comparing two-digit numbers?
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 enVision Mathematics Grade 1 Topic 9 cover?
enVision Mathematics Grade 1 Topic 9 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.