Divisibility Rules

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The lesson lists the rules to determine if a number is divisible by 2, 3, 4, 5, 6, 9, and 10.  Examples are given for the teacher to practice using the rules with the students. The lesson can be used in conjunction with other lessons related to factoring.

Divisibility Rules Lesson Plan Includes:

  • Full Teacher Guidelines with Creative Teaching Ideas
  • Instructional Content Pages about Divisibility Rules
  • Hands-on homework activities giving students practice on Divisibility Rules
  • Answer Keys
  • Common Core State Standards
  • Many Additional Links and Resources
  • Built for Grades 3-5 but can be adapted for other grade levels.

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Description

The lesson lists the rules to determine if a number is divisible by 2, 3, 4, 5, 6, 9, and 10.  Examples are given for the teacher to practice using the rules with the students. The lesson can be used in conjunction with other lessons related to factoring.

Classroom Procedure:

  1. Begin by explaining to students that there are a set of rules that can help us determine if a number is divisible by another number.
  2. While reading the content pages, reinforce vocabulary and give students additional examples of division problems in order to help them practice the new rules. Use the additional resources to enhance understanding.
  3. Introduce the notes on divisibility rules. Have students practice problems finding each divisor.  Use the additional resources to enhance understanding.
  4. Have students practice problems using a chart.
  5. Follow Activity page with students. Have students work individually to make their own study guide to use for the divisibility rules.
  6. Distribute Practice page. Check and review the students’ responses as a class.
  7. Distribute the Homework page. Have students work a few problems at the beginning of the next class to reinforce the rules.
  8. In closing, ask students to share which rule is the easiest and hardest for them to remember.
  9. Allow for responses and discussion.

Common Core State Standards:  

CCSS.Math.Content.3.OA.A.3, None for Grade 4, None for Grade 5

Class Sessions (45 minutes): 1 class session

Additional Resources:  

Many more teaching resources in Download!

Want more math resources? Check out our other Math Lesson Plans!

Additional information

Grade Level

3rd Grade, 4th Grade, 5th Grade

Subject

Math