Georgia 2.NR.1

2.NR.1 is a Georgia mathematics standard. These are the expectations under it.

• 2.NR.1.1

  Explain the value of a three-digit number using hundreds, tens, and ones in a variety of ways.

• 2.NR.1.2

  Count forward and backward by ones from any number within 1000. Count forward by fives from multiples of 5 within 1000. Count forward and backward by 10s and 10...

• 2.NR.1.3

  Represent, compare, and order whole numbers to 1000 with an emphasis on place value and equality. Use >, =, and < symbols to record the results of comparisons.

01

What Students Need to Do

Students use hundreds, tens, and ones to build, read, and write numbers through 1,000. They extend counting patterns, compare numbers from the hundreds place, and explain trades such as 10 tens making 1 hundred.

02

What Mastery Looks Like

Given a number through 1,000, the student reads it, builds it, and writes it in standard, word, and expanded forms. The student continues count sequences and compares two numbers using >, <, or = with a place-value explanation.

03

Common Misconceptions

Students may read 407 as 47 or write it as 4007 because they ignore zero as a placeholder. They may compare numbers from the ones place instead of starting with hundreds. They may also lose the pattern when a count sequence crosses into a new hundred.

04

How to Assess It

Exit ticket: Write 506 in expanded form, complete 496, 506, __, __, and circle the greater number, 650 or 605. Explain your comparison using place value.

1. 01

   Build assigned numbers with base-ten blocks, trade 10 ones for 1 ten, and record each number in standard, word, and expanded form.

2. 02

   Explain why 407 is greater than 390, using hundreds, tens, and ones in your answer.

3. 03

   Play Number Builder: draw three digit cards, make the greatest possible number, read it aloud, then compare it with a partner's number.

4. 04

   Compare attendance totals for four school events, then order the totals and explain which event had the largest crowd.

• 4.NR.1

  Recognize patterns within the base ten place value system with quantities presented in real-life situations to compare and round multi-digit whole numbers throu...

• 4.NR.1.3

  Use place value reasoning to represent, compare, and order multi-digit numbers, using >, =, and < symbols to record the results of comparisons.

• 3.NR.1

  Use place value reasoning to represent, read, write, and compare numerical values up to 10,000 and round whole numbers up to 1,000.