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3rd Grade Math
9. 3.NBT.A.2
9.2 Adding with Digits Up to 1000
Adding with Digits Up to 1000
What You'll Learn
Add multi-digit numbers up to 1000 using place value understanding
Apply regrouping strategies when sums exceed 10 in any place value
Recognize the role of ones, tens, and hundreds places in addition
Calculate accurate sums by adding digits column by column
What You'll Practice
1
Adding two-digit and three-digit numbers without regrouping
2
Adding numbers with regrouping across multiple place values
3
Solving addition problems with numbers up to 1000
Why This Matters
Mastering addition with larger numbers builds your foundation for all future math, from multiplication and division to decimals and algebra. You'll use these skills daily when working with money, measurements, and solving real-world problems.
This Unit Includes
4 Video lessons
Practice exercises
Skills
Addition
Place Value
Regrouping
Multi-Digit Numbers
Mental Math
TN Curriculum Aligned