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3rd Grade Math
10. 3.NBT.A.3
10.4 Addition with Tens and Ones
Addition with Tens and Ones
What You'll Learn
Recognize place value structure using tens and ones in numbers up to 1000
Apply addition strategies by combining tens and ones separately
Calculate sums by adding multiples of ten to three-digit numbers
Understand how regrouping works when ones or tens exceed their place value
What You'll Practice
1
Adding two-digit and three-digit numbers by tens
2
Solving addition problems with numbers up to 1000
3
Breaking numbers into tens and ones to simplify addition
Why This Matters
Adding with tens and ones builds your number sense and mental math skills, making everyday calculations faster and easier. This foundational skill prepares you for multi-digit operations, estimation, and problem-solving in all future math courses.
This Unit Includes
1 Video lesson
Practice exercises
Skills
Place Value
Addition
Tens and Ones
Mental Math
Regrouping
Number Sense
TN Curriculum Aligned