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# Unit 4

### Math

TermDefinition
Power A number that represents repeated multiplication Example: 10^5 or 10 to the power of 5
Base The number that is used as a factor. Example: 1
Exponent Tells how many times the factor is used. Example: 2^6
Expression Consists of a combination of numbers and an operation. Example: 2^2 + 2
Term A part of an expression that is separated by a plus or a minus sign. Example: 1 + 2
Super Scripted Numbers A exponent Example: ^5
Factor Numbers you can multiply to get another number.
Order Of Operations The rules on how to solve an expression. Example: PEMDAS
Numerical Expression A mathematical phrase that has only numbers and one or more only operation symbols. Example: 4+3=7
Algebra Uses letters or other symbols in place of unknown values, can be used in a expression. Example: 2+y=7
Algebraic Expression A mathematical phrase that contains ordinary numbers, and variables. Example: 2+7=y
Variable A number that we have to figure out in an algebraic expression. Example: 2+y=7 Variable=y
Equation Says two things are equal, and has an "= "sign. Example: (12+3)=(14+1)
Properties Statements that are true for any number. Example: 6+10 or 10+6
Commutative Properties Allows you to change the order in which two numbers are added or multiplied without changing the product or sum. Example: a+b or b+a, ab = ba
Associative Properties Allows you to change the grouping of two numbers that are being multiplied or added without changing the sum or the product. Example: (b+c) = (a+b), a(bc) or (ab)c
Identity Properties Allows you to add 0 to an number and not change its sum and allows you to do the same with multiplying but with 1 and the same with division. Example: 22+0, 22 x 1, and 22 / 1
Equivalent Expressions Expressions that have the same sum but are switched around. Example: 6 x 10 or 10 x 6
Distributive Property Multiply a group of numbers or separately. Example: 2(7*8) or 2*7 + 2*8
Factor the Expression When numeric or algebraic expression are written as a product of their factors. Example: 12 + 8
Coefficient A number used to multiply a variable. Example: 22x
Constant A number thats on its own. Example: 4x+7
Like Terms To variable that are the same. Example: 2x+5x=7x
Created by: JoeQuartuccio22