Real-World Expressions

Front

What is a real-world expression?

Back

A real-world expression is a mathematical expression that represents a situation or problem from everyday life, often involving variables and constants.

Front

If x represents the number of candies Luke ate, what does the expression 2x + 3 represent?

Back

The expression 2x + 3 represents the number of candies Kayla ate, which is 3 more than twice the number of candies Luke ate.

Front

What does the expression 3s - 15 represent in the context of students at Abbott Middle School?

Back

The expression 3s - 15 represents the number of students at Abbott Middle School, which is 15 less than 3 times the number of students at Gainesville Middle School.

Front

In the expression 24x + 50, what does the variable x represent?

Back

In the expression 24x + 50, the variable x represents the number of months a member has been using the gym facilities.

Front

What does the expression 40x + 25y represent in Naomi's lawn service?

Back

The expression 40x + 25y represents the total amount Naomi could potentially make this summer, where x is the number of big lawns and y is the number of smaller lawns.

Front

If Cody has $450 and adds $20 each week, what does the expression 450 + 20x represent?

Back

The expression 450 + 20x represents the total amount of money Cody has in his savings account after x weeks.

Front

What is a variable in a mathematical expression?

Back

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

Front

What is a constant in a mathematical expression?

Back

A constant is a fixed value that does not change in a mathematical expression.

Front

How do you translate a word problem into a mathematical expression?

Back

To translate a word problem into a mathematical expression, identify the quantities involved, determine the relationships between them, and use variables to represent unknowns.

Front

What does the term 'expression' mean in mathematics?

Back

An expression in mathematics is a combination of numbers, variables, and operations (like addition, subtraction, multiplication, and division) that represents a value.