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EXAMPLES & SOLUTIONS
Anchor 1
Expressions are math sentences with a minimum of two numbers or variables and at least one operator.
Variables is a non-number, such as x, y.
A variable explains an unknown number in the expression.
The variable assist in providing a solution to an expression.
Terms are numbers and/or variables in the expression.
A constant is any number not attached to a variable.
Constant numbers never changes in an expression.
A coefficient is the number that has a variable and number combined.
COMPONENTS OF EXPRESSIONS
Variables, terms, coefficients and constants form expressions
4x + 3y + 2
Variables: x, y
Terms: 4x, 3y, 2
Coefficient: 4, 3
Constant: 2
Two Forms of Expressions
Explaining how to discover the components to an expression
Numerical Expression
Rule:
Numeric expressions have NO variables values that exist. We can evaluate these expressions.
4 + 2 * (-8)
Variables: none
Terms: 4, 2, -8
Coefficient: none
Constant: 4, 2, -8
Algebraic Expression
Rule:
Algebraic expressions contain a variable that has an unknown value that needs to be solved.
4x + 2
Variables: x
Terms: 4x, 2
Coefficient: 4
Constant: 2
Evaluating Expression Components
Examples of how to discover the components of an expression
2x + 4n
Variables: x, n
Terms:
Coefficient: 2, 4
Constant: none
2x, 4n
4xw + 8 - 6y - 9xw
2
2
3
2
2
4xw , 8, 6y , 9xw
3
Variables: x
Terms:
Coefficient: 4, 6, 9
Constant: 8
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