Expressions vs Equations

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (such as +, -, *, /) that represents a value but does not include an equality sign.

Front

What is an equation in mathematics?

Back

An equation is a mathematical statement that asserts the equality of two expressions, typically containing an equals sign (=).

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equals sign and represents a value, while an equation states that two expressions are equal.

Front

Translate the phrase 'the sum of a number and 5' into an algebraic expression using n.

Back

n + 5

Front

Translate the phrase 'the product of 4 and a number' into an algebraic expression using x.

Back

4x

Front

What does the term 'variable' mean in mathematics?

Back

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

Front

What is a constant in mathematics?

Back

A constant is a fixed value that does not change, such as the number 5 or -3.

Front

What are coefficients in an algebraic expression?

Back

Coefficients are the numerical factors that multiply the variables in an expression, such as 3 in 3x.

Front

What is the algebraic expression for '3 times a number decreased by 7'?

Back

3n - 7

Front

Identify the expression: 2x + 3y - 5.

Back

This is an algebraic expression because it contains variables and does not have an equals sign.