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Grade 6 - Topic 3 (Numeric & Algebraic Expressions) Envisions Math
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Terms in this set (19)
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
power
--- a number that can be written using exponents
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
factor tree
a diagram showing the prime factorization of a number
LCM (Least Common Multiple)
The smallest whole number greater than 0 that is a common multiple of each of two or more numbers.
GCF (Greatest Common Factor)
the greatest number that is a factor of two or more numbers
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