Chapter 2.1
Adding digits up to 100
What You'll Learn
Add two-digit numbers using place value understanding
Solve addition problems with sums up to 100
Apply regrouping strategies when adding ones and tens
Identify missing addends in addition equations
What You'll Practice
1
Adding two numbers with sums up to 100
2
Finding missing numbers to complete addition statements
3
Solving vertical addition problems
Why This Matters
Adding numbers up to 100 is essential for everyday math like counting money, measuring ingredients, and telling time. This skill builds the foundation for all future arithmetic, including subtraction, multiplication, and solving word problems.
This Unit Includes
Practice exercises
Skills
Addition
Place Value
Regrouping
Two-Digit Numbers
Mental Math
