Operations on Expressions

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (such as +, -, *, /) that represents a value.

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

What is the value of b^2 + 4 when b = 3?

Back

13

Front

How do you solve the equation 2x - 4 = 6?

Back

Add 4 to both sides to get 2x = 10, then divide by 2 to find x = 5.

Front

What is the distributive property?

Back

The distributive property states that a(b + c) = ab + ac, meaning you can distribute a across the terms inside the parentheses.

Front

What is the result of 3(2c - 5)?

Back

6c - 15

Front

How do you evaluate m^2 if m = 7?

Back

Substitute 7 for m: 7^2 = 49.

Front

What is the value of 4x if x = 5?

Back

20

Front

What is a variable in an expression?

Back

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

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to combine like terms and reduce it to its simplest form.