Chapter 2.5
Addition strategies
What You'll Learn
Recognize place value structure in two-digit addition problems
Separate addition problems into tens and ones for easier calculation
Apply the separation strategy to break down sums up to 100
Combine partial sums from each place value to find total answers
What You'll Practice
1
Breaking two-digit addition into tens and ones
2
Identifying equivalent addition expressions using place value separation
3
Solving problems by adding place values separately
Why This Matters
Addition strategies using place value separation build your number sense and mental math skills. This foundational technique makes adding larger numbers easier and prepares you for multi-digit operations, estimation, and problem-solving throughout math.
This Unit Includes
Practice exercises
Skills
Place Value
Addition
Mental Math
Number Sense
Two-Digit Numbers
