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Grade 6 - Topic 3 (Numeric & Algebraic Expressions) Envisions Math
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Terms in this set (16)
exponent
This tells the number of times the base is used as a factor.
base
A number that is used as a factor a number of times shown by an exponent.
evaluate
To find the value of the expression. To Solve.
power
The product of repeated multiplication of a base. Used as a casual synonym for exponent. Used most often in the expression "powers of ten."
algebraic expression
A mathematical phrase that has at least one variable and at least one operation. Example: 4x + 7
variable
A letter or symbol that represents an unknown quantity. Most commonly used are x and y.
coefficient
A number that is multiplied by a variable in an algebraic expression. In this example, 2 is the coeffient: 2y - 8
term
Each part of an expression that is separated by a plus or minus sign. In this example, 2y is a term and 8 is a term: 2y - 8
equivalent expressions
Expressions that are equal. They have the same value regardless of what number is substituted for the variable.
substitution
When evaluating an algebraic expression, use this to replace the variable with a number.
simplify
Use operations to combine like terms in an algebraic expression.
like terms
Terms that have the same variable. Example: 4x and 6x are like terms. You can add these together and write 10x.
prime factorization
A number written as the product of its prime factors
numerical expression
An expression that contains only numbers and operations
prime number
A whole number that has exactly two factors, 1 and itself.
composite number
A number with more than two factors
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