Equations and Expressions Review

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 given numbers.

Front

What is the distributive property?

Back

The distributive property states that a(b + c) = ab + ac, meaning you can distribute the multiplication over addition.

Front

Evaluate the expression when v = 4: 5(v + 1)

Back

25

Front

Use the distributive property to simplify: 5(1 + 5b)

Back

5 + 25b

Front

Evaluate the expression when b = 2: b(b + 12)

Back

28

Front

What is the solution for k in the equation -10k = 50?

Back

k = -5

Front

Evaluate the expression when a = 10: 5a + 2

Back

52

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 is the difference between an equation and an expression?

Back

An equation states that two expressions are equal, while an expression does not include an equality sign.