Find Your Number Group
divisibility · grouping numbers by divisibility by 2, 3, or 5
Use divisibility rules to find which group of students a number belongs with.
Find Your Number Group is a Grade 4 whole-class divisibility activity that gets students moving while applying rules for 2, 3, and 5. Each student receives a number card and must find classmates whose numbers belong to the same divisibility category. A later challenge with a number that fits multiple groups helps reveal that divisibility categories can overlap.
Use it when students know the basic rules and need to apply them quickly to many examples. The group formation makes misconceptions visible and sets up discussion about numbers that satisfy more than one test. Create a free Find a Math Game account to generate lesson support for Find Your Number Group. No credit card; 3 lesson generations for life.
- Grades:
- 4
- Materials:
- cards
- Classroom use:
- whole class
Standards alignment
Official Rules
Verified publisher content. Generate this game's lesson with a free account to unlock the complete Official Rules.
Original Printable
Unlocks when you generate this game's lesson.