Divisibility Rules: Dividing by 2 | Worksheet | Education.com Divisibility Rules: Dividing by 2. Help third- and fourth-grade math learners review the divisibility rule for 2 with this fun practice worksheet! Students will begin by reviewing the rule that states that a number is divisible by 2 if its last digit is 0, 2, 4, 6, or 8. They will also review an example and a non-example of this divisibility rule.