Evaluate Expressions

Front

Define algebraic expression.

Back

A math phrase that may have numbers, variables, and operations.

Front

What is the result of the expression 18 - 8 ÷ 2?

Back

14

Front

What is the result of the expression 4 + 2 x 7?

Back

18

Front

Identify the error in the problem: 19 - 2k = 3k - 1; +3k; 19 + 1k = -1; -19; k = -20.

Back

Instead of adding 3k they should subtract 3k.

Front

Distribute and combine like terms: 5x - 2(3x - 4).

Back

-x + 8 or 8 - x.

Front

What is the order of operations in mathematics?

Back

Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

What does it mean to evaluate an expression?

Back

To calculate the value of an expression by substituting numbers for variables.

Front

What is a variable in algebra?

Back

A symbol, usually a letter, that represents an unknown value.

Front

What is a coefficient?

Back

A numerical factor in a term of an algebraic expression.

Front

What is a constant in an algebraic expression?

Back

A fixed value that does not change.