Variables Review

Front

What is a variable in mathematics?

Back

A variable is a symbol, often a letter, that represents a number that can change or vary.

Front

What does the expression 6c represent?

Back

It represents 6 boxes of candy, where 'c' is the number of candies in each box.

Front

In the expression 5 + y, what does 'y' represent?

Back

'y' represents a number that can change; it is the variable in the expression.

Front

What equation represents Chris washing cars for 4 days and washing a total of 20 cars?

Back

4x = 20, where 'x' is the number of cars washed each day.

Front

If v represents the number of vacation days Laura has, what does 7v represent?

Back

7v represents the number of vacation days Nancy has, which is 7 times the number of days Laura has.

Front

What does the variable 'x' represent in the equation 8x = 160?

Back

The variable 'x' represents the number of hours Kyle worked last week.

Front

How do you solve the equation 4x = 20?

Back

Divide both sides by 4 to find x: x = 20 / 4 = 5.

Front

What is the meaning of the expression 7 - v?

Back

It represents 7 minus the number of vacation days Laura has.

Front

What does the expression v + 7 represent?

Back

It represents the number of vacation days Laura has plus 7.

Front

What is the first step to solve the equation 8x = 160?

Back

Divide both sides of the equation by 8.