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 simplify an expression?

Back

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

Front

What are coefficients in an expression?

Back

Coefficients are the numerical factors that multiply the variables in an expression.

Front

What is the distributive property?

Back

The distributive property states that a(b + c) = ab + ac, meaning you can distribute a factor across a sum.

Front

How do you combine like terms?

Back

You combine like terms by adding or subtracting the coefficients of terms that have the same variable.

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.

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 difference between an expression and an equation?

Back

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

Front

How would you represent 'a number p increased by 48'?

Back

p + 48

Front

How would you represent '8 less than 17 times a number x'?

Back

17x - 8