## Competency 14 Number Concepts and Operations

 Grouping Property
 The associative property is also known as the…
 Commutative Property
 The order does not change the results   ex. a+b = b+a OR a x b = b x a
 Associative
 The order of operations performed in groups when adding or multiplying   Ex: 8+(2+10) =(8+2) +10 Ex: 6(3×4) = 3(4×6)
 Order Property
 The commutative property is also known as the…
 Composite Numbers
 Numbers with factors other than the number itself and 1 Ex: 4, 6, 9,27,33,49, 72
 Prime Numbers
 Numbers having only 2 factors, the number itself and 1   Ex: 3, 5, 7, 11, 13, 17 NOTE: 1 is NOT included
 Integers
 Whole numbers that are negative or positive, including zero
 Prime Numbers
 these numbers can be odd or even the only factors are 1 and the number itself has an infinite number of multiples
 Greatest Common Factor or Greatest Common Denominator
 The largest number that is a factor of 2 or more numbers is called…
 Scientific Notation
 Writing a number as the product of a power of 10 Ex:240.2 = 2.402 x 102 Ex: 2,400,000 = 2.4 x 106
 Multiple
 The time tables for a number.   Ex: 9:18, 27, 36, 45, 54… Ex: 5:10, 15, 20, 25, 30…
 Least Common Multiple
 The smallest number that is a multiple of 2 or more numbers   EX: 15 is the smallest number that both 3 and 5 can go into (3:3, 6, 9, 12, 15, 18…) (5:5, 10, 15, 20, 25…)
 Prime Factorization
 Writing the number as only the product of prime numbers   Using a factor tree to find the answer
 Distributive Property
 Distributing numbers without changing the results Distributing numbers as they are taken apart   Ex: a(b+c) = (axb) + (axc) Ex: 3(4+8) = (3×4) +(3×8)
 Percent as a Decimal
 Divide the value by 100, then move the decimal point 2 places to the left will result in writing a
 One-to-One Correspondence
 Matching, like setting a table; Matching each number with one object is called…
 Algorithm
 The procedure, method, or rule that breaks computation into small steps The step-by-step way of solving a problem
 Writing a percent as a fraction
 Rewriting the precent using a denominator of 100 Ex: 25/100 = 25%
 Positive numbers
 negative x negative positive x positive
 Negative number
 positive x negative will equal?
 Quotient
 In division, the answer is considered the…
 Dividend
 In division, the number on the inside that is being divided is the…
 Divisor
 In division, the number located on the outside, and the number which the dividend is divided…