# Study Guide - Factors, Multiples, Number Puzzles

 Composite Number A whole number that has more than two factors Prime Number A number that is only divisible by itself and 1 Square Number Any # of tiles that can make a square Factor One of the numbers that are being multiplied to equal a product Multiple The numbers you say when skip counting by a certain number How do you know if a number is divisible by 2? If it is an EVEN number How do you know if a number is divisible by 5? The number has to end with a 0 or a 5. How do you know if a number is divisible by 10? The number has to end in a zero. How do you know if a number is divisible by 3? The sum of its digits is divisible by 3. 1231 + 2 + 3 = 66 is divisible by 3. How do you know if a number is divisible by 6? If the number is divisible by 2 AND by 3! 126126 is an even number (is divisible by 2)1 + 2 + 6 = 9 (is divisible by 3) Authorandroid ID42253 Card SetStudy Guide - Factors, Multiples, Number Puzzles DescriptionDefine terms Updated2010-10-14T23:54:44Z Show Answers