Module 3 Review: Expressions, Inequalities and 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 is an inequality?

Back

An inequality is a mathematical statement that compares two expressions using symbols like <, >, ≤, or ≥.

Front

How do you solve a simple equation?

Back

To solve a simple equation, isolate the variable on one side by performing inverse operations on both sides.

Front

What is the reciprocal of a number?

Back

The reciprocal of a number is 1 divided by that number. For example, the reciprocal of ⅝ is 8/5.

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to reduce it to its simplest form by combining like terms and performing operations.

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

How do you write an inequality for a situation?

Back

To write an inequality, identify the minimum or maximum value and use symbols like <, >, ≤, or ≥ to express the relationship.

Front

What is a variable in mathematics?

Back

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

Front

What is the value of x in the equation 2x + 3 = 7?

Back

x = 2.

Front

How do you evaluate an expression?

Back

To evaluate an expression, substitute the values of the variables into the expression and perform the operations.