Evaluate Algebraic Expressions

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. For example, 2x + 3 is an algebraic expression.

Front

What does it mean to evaluate an algebraic expression?

Back

To evaluate an algebraic expression means to substitute the values of the variables into the expression and perform the operations to find a numerical result.

Front

Evaluate the expression 6 + 7b - 3a if a = 2 and b = 8.

Back

56

Front

Evaluate the expression 2(a - 5) + 2 when a = 15.

Back

22

Front

Evaluate the expression r/t using the values m = 7, r = 8, and t = 2.

Back

4

Front

What does the expression $14.25p + $4.50 represent?

Back

It represents the total cost of ordering p CDs, where each CD costs $14.25 and there is a shipping charge of $4.50.

Front

Find the total cost for ordering 4 CDs using the expression $14.25p + $4.50.

Back

$61.50

Front

Evaluate the expression 2a + 4b if a = 10 and b = 6.

Back

44

Front

What is a variable in an algebraic expression?

Back

A variable is a symbol, often a letter, that represents an unknown value in an expression or equation. For example, in 3x + 2, x is a variable.

Front

What is a coefficient in an algebraic expression?

Back

A coefficient is a numerical factor that multiplies a variable in an expression. For example, in 5x, 5 is the coefficient.