Divisibility Rules: What are they? Rules to help you determine if numbers are divisible by other numbers. Divisible – if a number can be divided by another number with no remainder, decimal, or fraction. We will learn rules for 2, 3, 5, 6, 9, and 10.

Divisibility Rule for 2 A number is divisible by 2 if… The number is even. Even numbers end in 2, 4, 6, 8, or 0. Examples

Divisibility Rule for 10 A number is divisible by 10 if… The number ends in a zero. Examples 4,

Divisibility Rule for 5 A number is divisible by 5 if… The number ends in a 5 or 0. Examples 4,

Divisibility Rule for 3 A number is divisible by 3 if… The sum of the digits of the number is divisible by 3. Examples = / 3 = 4 9,363, = 33 33/3 = 11

Divisibility Rule for 9 A number is divisible by 9 if… The sum of the digits of the number is divisible by 9. Examples = / 9 = 2 999, = / 9 = 5

Divisibility Rule for 6 A number is divisible by 6 if… The number is divisible by both 3 and 2. Examples

Divisibility Rules A number is divisible by:  2 if the number is even.  3 if the sum of the digits is divisible by 3.  5 if the number ends in a 5 or 0.  6 if the number is divisible by 2 and 3.  9 if the sum of the digits is divisible by 9.  10 if the number ends in a 0.

What number(s) is the number below divisible by? 27 3 and 9

What number(s) is the number below divisible by? 42 2, 3, 6

What number(s) is the number below divisible by? 215 5

What number(s) is the number below divisible by? 9,990 2, 3, 5, 6, 9, and 10

What number(s) is the number below divisible by? 17 None

14 Homework: Practice worksheet 3-1 Correct Chapter 2 Test and Get it Signed 14