What is a divisibility rule vocabulary?

Answer 1

Divisibility rules are shortcuts that help determine whether a number can be evenly divided by another number without performing full division. These rules provide specific criteria for numbers such as 2, 3, 5, 10, and others, enabling quick assessments. For example, a number is divisible by 2 if its last digit is even, and it is divisible by 3 if the sum of its digits is divisible by 3. Understanding these rules simplifies arithmetic and aids in factorization and number theory.