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Grade 7 - Topic 4 Vocabulary
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Terms in this set (16)
algebraic expression
A mathematical phrase that consists of variables, numbers, and operation symbols
Coefficient
The number part of a term that has a variable
constant
A term that only contains a number
evaluate (no variables)
follow the order of operations
factor (adj)
Write an expression as a product
: 2x +4 factored: 2 (x + 2)
factor (n)
Numbers that are multiplied to give a product
greatest common factor (GCF)
The greatest number that is a factor of all of the numbers
like terms
Terms that have identical variable parts (variables and exponents) are like terms
numerical expression
A mathematical phrase that consists of numbers, (can contain grouping symbols - cannot contain variables) and operation symbols
simplify
Combine the like terms of an expression (order of operations)
substitute
Replace the variable of an expression with a number
term
A number, a variable, or the product of a number and one or more variables (separated by addition)
Variable
A letter that represents an unknown value
Order of Operations (PEMDAS)
Parenthesis, Exponents, Multiplication or Division (left to right), Addition or Subtraction (left to right)
what makes a value a solution to an equation?
when one side = the other side
x + 4 = 12 when x = 8, 8 is a solution. x = 7 is not a solution
(with variable)
substitute (value for variable) and simplify
when x = 3 evaluate 2x+4
2x+4
2(3) +4
6 +4
10
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