6.EE.2 - 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 the variable 'k' represent in the expression 10 + 5k?

Back

In the expression 10 + 5k, 'k' represents the number of kilometers walked.

Front

How do you evaluate the expression 10 + 5k when k = 6?

Back

Substitute 6 for k: 10 + 5(6) = 10 + 30 = 40.

Front

What is a coefficient in an expression?

Back

A coefficient is a numerical factor that multiplies a variable in an expression.

Front

Identify the coefficient in the expression 5n + 6 - 2.

Back

The coefficient is 5.

Front

What is the value of the expression 9x + 4y when x=4 and y=8?

Back

Substitute x=4 and y=8: 9(4) + 4(8) = 36 + 32 = 68.

Front

What does the term 'quotient' mean in mathematics?

Back

The term 'quotient' refers to the result of dividing one number by another.

Front

How do you find the total cost using the expression 2500 + 325m?

Back

Substitute the number of months (m) into the expression to find the total cost.

Front

Evaluate the expression 2500 + 325m for m = 6.

Back

2500 + 325(6) = 2500 + 1950 = 4450.

Front

What is the purpose of using variables in expressions?

Back

Variables allow us to represent unknown values and create general formulas.