Interpret and 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, 3x + 2 is an algebraic expression.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with specific numbers.

Front

Evaluate the expression 7h + 1.50d for h = 10 and d = 3.

Back

$74.50

Front

What is the value of the expression 2x + 3 + x² when x = 4?

Back

27

Front

Evaluate 7y - 3y for y = 2.

Back

8

Front

Evaluate (3x - 4)(x + 8) when x = 2.

Back

20

Front

What is the result of 18 ÷ 2a when a = 3?

Back

27

Front

What is a variable 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 coefficient in an algebraic expression?

Back

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

Front

What is the difference between an expression and an equation?

Back

An expression is a combination of numbers, variables, and operations without an equality sign, while an equation states that two expressions are equal.