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# IGHS Winkels

### Pre-Algebra Chapter 2 Vocabulary

TermDefinition
number expression a number or numbers together with operation symbols
parentheses a pair of grouping symbols ( ); may also mean multiplication
simplify carry out the operations; find the value
equivalent having the same value; equal
number equation a statement that two number expressions are equal
property a fact that is true for addition and for multiplication
Commutative Properties two numbers can be added in any order; two numbers can be multiplied in any order
Associative Properties more than two numbers can be added or multiplied in groups of two; the way the numbers are grouped does not matter
Identity Properties adding 0 to a number does not change the number; multiplying a number by 1 does not change the number
Zero Property a number multiplied by 0 is 0
Distributive Property to multiply a sum or difference by a number, multiply each number of the sum or difference
Division Properties a number divided by itself is 1; a number divided by 1 is the same number; 0 divided by any number that is not 0
area the number of squares needed to cover a closed figure
Created by: Winkels