**Important Chapter Vocabulary**1.

**Common factor;**A number that is a factor of two or more numbers.

2.

**Common Multiple;**A number that is a multiple of two or more numbers.

3.

**Composite Number;**A number that has more than two factors.

4.

**Divisible;**A number is divisible by another number if the quotient is a counting number and the remainder is zero.

5.

**Factor;**A number multiplied by another number to find a product.

6.

**Pattern;**An ordered set of numbers or objects.

7.

**Prime Number;**A number that has exactly two factors, one and itself.

8.

**Term;**Each number or object in a pattern.

**Divisibility Rules**

**Number****Divisibility Rule**__2__The number is even.

__3__The sum of the digits

is divisible by 3.

__5__The last digit is 0 or 5.

__6__The number is even

and divisible by 3.

__9__The sum of the digits

is divisible by 9.