Associative Law of Addition

The associative law of addition was confusing for my students, but it is totally necessary for understanding order of operations in later mathematics. In this video, Sal uses the associative law of addition to write the expression (77+2) +3 in a different way. He explains that you can associate or add numbers in different ways. Sal demonstrates that adding (77+2) +3 is the same as adding (2+3) +77.

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Resource Details

Grade
5th - 7th
Subjects
Math
2 more...
Resource Types
Videos
1 more...
Instructional Strategy
Flipped Classroom
Usage Permissions
Creative Commons
BY-NC-SA: 3.0
cc