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Vocabulary 1
Vocabulary 2
Examples 1
Examples 2
Skill Practice
100
A letter used to represent one or more numbers.
What is the variable?
100
An expression that consists of numbers, variables and operations.
What is an expression or variable expression?
100
Some examples include the following: 4x - 9, 7k, -n + 1
What is an expression or variable expression?
100
Some expamples include the following: 3x - 10 = 12, -5 + 12x = 67, 18 = -4x + 6
What is an equation?
100
Solve the equation to find the value of x. 7x - 11 = 10
What is x = 3?
200
A mathematical sentence formed by setting two expressions equal by using an equal symbol.
What is an equation?
200
The number part of a term that includes a variable. (NOTE: The number in front of the variable)
What is the coefficient?
200
5 in 5x, -8 in -8w, -1 in -k
What is the coefficient?
200
2 in 9x + 2, -7 in 15x - 7, 1 in x + 1
What is the constant term?
200
Simplify by collecting the like terms of 3x + 10x + x
What is 14x?
300
A term that has a number but no variable.
What is the constant term?
300
Terms that have identical variable parts.
What are like terms?
300
Some examples include the following: 3x + 8x, -2n + n, 6k - 10k + 9k
What are like terms?
300
In the variable expression -2x + 1 there are two of these, -2x and 1.
What are terms of an expression?
300
What is the coefficient of -6x?
What is -6?
400
Substituting a value for each variable in the expression and simplifying the expression by following the order of operations.
What is evaluating a variable expression?
400
A word equation that represents a real-word situation.
What is a verbal model?
400
4n + 9 when n = -12, 4(-12) + 9, -48 + 9 = -39
What is evaluating a variable expression?
400
Some examples include the following: Half of a number decreased by 25 = 1/2n - 25, Twice a number added to 6 = 6 + 2n
What is a verbal model?
400
What is the constant in the term 3x - 8?
What is -8?
500
A number that, when substituted for the variable in the equation, makes the equation true.
What is the solution of an equation?
500
A mathematical sentence formed by placing a symbol between two expressions (NOTE: not equal)
What is an inequality?
500
Some examples include the following: 7 < -5x - 13, 6x + 21 > 15
What is an inequality?
500
The solution of the equation 4x - 21 = 11 is?
What is 8?
500
Evaluate the expression -5x + 10 when x = 6
What is -20?