Unit Plan 6 (Grade 2 Math): Place Value to 1,000—Hundreds, Tens, and Ones
Use bundles of tens/hundreds to read–write numbers to 1,000 in standard, word, and expanded form, then compare three-digit numbers with >, =, < using place-value reasoning.
Focus: Understand bundles of 10 and 100; read/write numbers to 1,000 in standard, word, and expanded form; compare numbers using >, =, < with precise place-value language.
Grade Level: 2
Subject Area: Mathematics (Number & Operations in Base Ten)
Total Unit Duration: 5 sessions (one week), 35–45 minutes per session
I. Introduction
This week, students deepen place-value understanding by building bundles of tens and hundreds, naming the value of each digit, and switching flexibly among standard, word, and expanded forms. They practice accurate comparison using >, =, < and justify with models and number lines.
Essential Questions
- How do bundles of tens and hundreds help me understand the value of each digit?
- How can I show the same number in standard, word, and expanded form?
- How do I know when to use >, =, or <, and how can I prove my comparison?
II. Objectives and Standards
Learning Objectives — Students will be able to:
- Explain that a digit’s value is ten times the value of the place to its right (e.g., hundreds, tens, ones).
- Read and write numbers to 1,000 in standard, word, and expanded form.
- Compare two three-digit numbers using >, =, <, justifying with models and place-value language.
- Use MP.6 (precision) to label bundles, record forms correctly, and avoid common notation errors.
- Translate among forms fluently and check for reasonableness on a number line.
Standards Alignment — CCSS Grade 2 (spiral across the unit)
- 2.NBT.1a–b: Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones; 100 can be thought of as a bundle of ten tens.
- 2.NBT.3: Read and write numbers to 1,000 using base-ten numerals (standard form), number names (word form), and expanded form.
- 2.NBT.4: Compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, <.
- MP.6: Attend to precision (labels, symbols, neat notation).
Success Criteria — Student Language
- I can tell how many hundreds, tens, and ones are in a number and what each digit is worth.
- I can write numbers in standard, word, and expanded form and check that they match.
- I can compare two numbers with >, =, < and prove it with a model or number line.