Reveal Math Grade 2, Unit 4: Place Value to 1,000
In this unit, your child works with numbers all the way to 1,000. They find out what each digit is worth, count and skip-count by 5s, 10s, and 100s, write numbers in words and expanded form, and compare numbers using >, =, and <. It builds on equal groups and arrays and gets kids ready for two-digit addition in the next unit.
By Robert “Bobby” BarnettMath teacher, parent, and founder of Bobby’s Math Club
What is my child learning in Unit 4?
- Building numbers like 482 from 4 hundreds, 8 tens, and 2 ones, and knowing that 10 hundreds make 1,000. Learn more: Hundreds, tens, and ones in numbers like 706
- Counting by 5s, 10s, and 100s from different starting points, like 315, 325, 335. Learn more about counting within 1,000: Counting within 1,000 · Learn more about skip-counting by 5s, 10s, and 100s
- Writing a number three ways: as a numeral like 608, in words, and in expanded form as 600 + 8. Learn more: Reading and writing numbers to 1,000
- Comparing numbers like 199 and 210 by starting at the hundreds place, and recording it as 199 < 210. 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
- Look at prices on store shelves and ask your child to read three-digit numbers aloud. Then pick two and ask which one is greater.
- Draw three playing cards from ace to 9, like 4, 8, and 2. Ask for the biggest number you can make with them, 842, and the smallest, 248.
- Take turns counting by 10s on a walk, starting at a number like 315. See if your child can cross 400 without stopping.
Where kids can get stuck
- Thinking 199 is more than 210 because it has bigger digits.
- Reading the 4 in 482 as four instead of four hundred.
- Writing four hundred thirty-six as 400306, the way it sounds, instead of 436.
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
- digit
- One of the symbols 0 to 9 used to write numbers. 352 has three digits.
- place value
- What a digit is worth because of where it sits. In 352, the 5 means 50.
- hundred
- Ten tens, or 100. The 7 in 706 means 7 hundreds.
- numeral
- A number written with digits, like 352, instead of in words.
- expanded form
- A number written as the sum of its parts, like 352 = 300 + 50 + 2.
- greater than
- Bigger than. The sign > means greater than, as in 301 > 298.
- less than
- Smaller than. The sign < means less than, as in 199 < 210.
- equal to
- The same amount. The sign = means equal to.
Want to help your child master numbers to 1,000?
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 2 Unit 4 cover?
Reveal Math Grade 2 Unit 4 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.