Variables Review

Front

What is a variable in mathematics?

Back

A symbol, often a letter, that represents a number in an expression or equation.

Front

What does the expression 7v represent?

Back

It represents 7 times the value of the variable v.

Front

In the equation 8x = 160, what does x represent?

Back

The number of hours Kyle worked last week.

Front

What is the purpose of using variables in math?

Back

To represent unknown values and to create general expressions or equations.

Front

What does the expression 6c mean in a story problem?

Back

It means Sarah has 6 boxes of candy, each containing the same number of candies.

Front

What is an open sentence in mathematics?

Back

An equation that contains a variable and can be true or false depending on the value of the variable.

Front

What does the expression '10 less than a number' translate to in algebra?

Back

n - 10.

Front

How do you identify a variable in an expression?

Back

Look for letters or symbols that represent unknown values.

Front

What is the difference between a constant and a variable?

Back

A constant is a fixed value, while a variable can change.

Front

What does the term 'expression' mean in mathematics?

Back

A combination of numbers, variables, and operations without an equality sign.