Learning Objectives
- 1Understand addition as combining two or more groups into one
- 2Master the four properties: commutative, associative, identity, and closure
- 3Add single-digit numbers confidently using number-line and counting-on strategies
- 4Learn the concept of carrying (regrouping) in multi-digit addition
- 5Solve two-digit, three-digit, and larger addition problems using the standard algorithm
- 6Apply mental addition strategies: decomposition, near-tens, and left-to-right
Lessons in This Chapter
Chapter Progress
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