Algebraic Expressions

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that contains at least one variable, a constant, and an operation (like addition, subtraction, multiplication, or division).

Front

What does the term 'variable' mean in algebra?

Back

A variable is a symbol (usually a letter) that represents an unknown value in an expression or equation.

Front

What is a constant in an algebraic expression?

Back

A constant is a fixed value that does not change, such as numbers like 5, -3, or 12.

Front

What is the operation in the expression 3x + 5?

Back

The operation is addition, as it combines the term 3x and the constant 5.

Front

Evaluate the expression: 2m + 3 when m = 4.

Back

2(4) + 3 = 8 + 3 = 11.

Front

Which of the following is NOT a word phrase for the expression n + 16? a) a number increased by 16 b) 16 increased by a number c) the sum of a number and 16 d) 16 more than a number

Back

b) 16 increased by a number.

Front

If a cell phone company charges $40 per month plus a $35 activation fee, what is the total cost for 2 months?

Back

$40(2) + $35 = $80 + $35 = $115.

Front

Evaluate the expression: 4m + t when m = 7 and t = 2.

Back

4(7) + 2 = 28 + 2 = 30.

Front

What is the value of r/t when r = 8 and t = 2?

Back

8 / 2 = 4.

Front

What is the difference between a term and an algebraic expression?

Back

A term is a single mathematical expression (like 3x or 5), while an algebraic expression is a combination of terms (like 3x + 5).