Dividing a Sum by a Number

Divide with sums. A video provides an explanation on whether it is possible to divide a sum by a number and a number by a sum by using the distributive property. Scholars see which procedure holds up under the rules of arithmetic and make the connection to long division.

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CCSS: Adaptable
Additional Tags
Instructional Ideas
  • Lead a discussion on different methods to decompose numbers
Classroom Considerations
  • Assumes the class understands the distributive property
  • Requires pupils to know the relationship between multiplication and division
Pros
  • Uses concrete examples before going to the abstract
  • Shows a counterexample to demonstrate what does not work 
Cons
  • None
Common Core