Find a quick, concise explanation of how to use the rules for divisibility by the numbers 2 through 10. Examples are given and clearly explained for each of the divisibility rules.

The lesson plan for two to four players engaged in an active card game to determine the divisibility of a number. The materials needed, the rules of the game, and the methods of scoring are all explained for the teacher.

This is a complete lesson about the concept of divisibility and common divisibility rules. It briefly reviews the concepts of factor, divisor, and a number being divisible by another. Then, the "easy" divisibility rules by 2, 5, 10, 100,...

This task investigates divisibility properties for the numbers 3, 6, and 7. Aligns with 4.OA.C.

[Free Registration/Login Required] Testing for divisibility of 0, 2, 3, 4, 5, 9, 10 & 11. This flipchart explores factorials and perfect numbers as well.

Use these 100s Boards to have students check for divisibility by 2-12 and for square and prime numbers. Just find the links below the 100s board that has the directions printed right on top of the worksheet.

This lesson shows examples of how to get started with the prime factorization of three-digit or larger numbers, using a factor tree. includes numerous practice exercises.