Chapter 8.4
Addition facts up to 20
What You'll Learn
Recognize addition facts and their sums for numbers up to 20
Identify related addition facts using commutative property
Apply addition properties to solve problems quickly and accurately
Build automatic recall of basic addition combinations
What You'll Practice
1
Selecting related addition facts from given equations
2
Identifying equivalent addition expressions
3
Matching addition facts that use the same numbers
Why This Matters
Mastering addition facts up to 20 builds the foundation for all future math. Quick recall of these facts helps you solve multi-digit problems, work with fractions, and tackle algebra with confidence and speed.
This Unit Includes
Practice exercises
Skills
Addition Facts
Basic Operations
Number Sense
Commutative Property
Mental Math
PEI Curriculum Aligned