Vocabulary Words for September 24-28

1. multiple- the product of a specific number and another number
1. cheer: Multiples multiply up, up, up! Product answers multiply!
2. example: the multiples of 2 are 2, 4, 6, 8, and so on.
2. factor-numbers multiplied together to give a product
1. cheer: factors...break it down!
2. example: the factors (factor pairs) of 12 are 1 and 12, 2 and 6, and 3 and 4
3. prime-a whole number that has exacly 2 factors (itself and one)
1. cheer: a prime number is great than one, its factors are itself and one!
2. examples: 2, 3, 5, 7, 11
4. composite-a number greater than 1 that has more than 2 factors
1. cheer: composite numbers have company!
2. example: 4 (1,2,4) NOTE: 1 is neither prime or composite
5. factor string-a list of factors
1. example: 24- 2X3X4 (3 long)
6. prime factorization: a list of factors broken down only to PRIME factors (numbers MUST BE GREATER THAN 1)
1. example: 24-2X2X2X3
7. exponent- the small raised number in exponential notation that tells how many times the base is used as a factor.
1. cheer: 5 squared, I said 5X5!; 4 cubed, I said 4X4X4!
2. example: 5 squared = 25; 4 cubed= 64
8. square number- a number multiplied by itself.
1. cheer: square numbers: same columns, same rows!
2. example: 25 is a square number (5x5)
9. square root- a number that when multiplied by itself equals a square number
1. example: 9 is a square root because 3X3 =9
10. rectangular array- a rectangular arrangement of objects inrows and columns so that each row has the same number of objects and each column has the same number of objects.

***Be sure to know how to find the Least common multiple (LCM) and greatest common factor (GCF) for 2 numbers.