Go Math! Grade 2, Chapter 2: Numbers to 1000
In this unit, your child works with three-digit numbers. They learn that 10 tens make a hundred, show numbers with hundreds, tens, and ones, and count by 5s, 10s, and 100s up to 1,000. They write numbers in several forms and compare them with >, =, and <. Basic addition and subtraction facts come next, before bigger computation.
By Robert “Bobby” BarnettMath teacher, parent, and founder of Bobby’s Math Club
What is my child learning in Chapter 2?
- Grouping 10 tens as a hundred and showing three-digit numbers with blocks or quick pictures of hundreds, tens, and ones. Learn more: Hundreds, tens, and ones in numbers like 706
- Counting on by 1s, 10s, and 100s from a three-digit number, such as 230, 330, 430. Learn more about counting within 1,000: Counting within 1,000 · Learn more about skip-counting by 5s, 10s, and 100s
- Writing three-digit numbers in different ways, including in words and in expanded form, like 700 + 6 for 706. Learn more: Reading and writing numbers to 1,000
- Comparing three-digit numbers by their hundreds, tens, and ones and choosing >, =, or <. Learn more: Comparing three-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
How many hundreds are in 300?
- 3
- 30
- 300
How you can help
- Use the page numbers in a long book to talk about hundreds, tens, and ones, then flip to a page your child names, like 206.
- Ask your child to count by 100s from a number like 130 while you walk or ride, then switch to counting by 10s.
- Write two numbers with the same digits, like 362 and 326, and ask which is greater and how your child can tell.
Where kids can get stuck
- Writing 76 for seven hundred six, missing the zero that holds the tens place.
- Stumbling across a new hundred, saying 290, 2100 instead of 290, 300.
- Deciding a number with bigger digits is bigger, like picking 189 over 201.
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
- hundred
- Ten tens, or 100. In 482, the 4 means 4 hundreds.
- tens
- Groups of 10. In 47, the 4 means 4 tens, or 40.
- ones
- Single units. In 47, the 7 means 7 ones.
- place value
- The value a digit has because of its spot in a number: ones, tens, or hundreds.
- digit
- One of the symbols 0 through 9 that we use to write numbers.
- expanded form
- A number written as the sum of its parts, like 400 + 30 + 6 for 436.
- greater than
- More than. The symbol > means greater than, as in 52 > 25.
- less than
- Fewer than. The symbol < means less than, as in 25 < 52.
Ready to build your child’s confidence with three-digit place value?
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 2 Chapter 2 cover?
Go Math! Grade 2 Chapter 2 covers these math standards. Each one links to what it means, sample questions, and teaching strategies.
- 2.NBT.A.1: Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones.
- 2.NBT.A.2: Count within 1000; skip-count by 5s, 10s, and 100s.
- 2.NBT.A.3: Read and write numbers to 1000 using base-ten numerals, number names, and expanded form.
- 2.NBT.A.4: Compare two three-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.