Two and Three Digit Numbers Divisible by 11

Two and Three Digit Numbers Divisible by 11 is a Grade 4 number-pattern investigation that helps students discover divisibility rules instead of simply memorizing them. Students begin with two-digit multiples of 11, notice the repeated-digit pattern, then examine three-digit examples and look for relationships among the outer and middle digits.

Use it as a whole-class reasoning activity when students are studying divisibility and number structure. The final challenge asks students to create their own three-digit number containing a 9 that is divisible by 11, giving them a chance to test the rule they developed. Create a free Find a Math Game account to generate teacher-ready lesson support for this activity. No credit card is required, with 3 lifetime lesson generations.