Chapter 2.9
Completing addition statements up to 100
What You'll Learn
Identify missing addends in addition equations up to 100
Apply inverse operations to solve for unknown numbers in addition statements
Recognize that addition can be represented with the sum on either side of the equal sign
Understand the relationship between parts and wholes in addition within 100
What You'll Practice
1
Finding missing first addends when given the second addend and sum
2
Finding missing second addends when given the first addend and sum
3
Solving addition equations with sums up to 100
Why This Matters
Completing addition statements builds your number sense and problem-solving skills. This foundational skill prepares you for algebra, where you'll solve equations with unknowns, and helps you think flexibly about numbers in everyday situations like calculating change or missing quantities.
This Unit Includes
Practice exercises
Skills
Addition
Missing Addends
Number Sense
Inverse Operations
Equations
Place Value
