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 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 expression for 'twice a number'?

Back

2b, where b is the number.

Front

How do you express '9 more than 6 times a number'?

Back

6n + 9, where n is the number.

Front

What is the cost expression for leasing a car for m months?

Back

2500 + 325m, where m is the number of months.

Front

If m = 6, what is the cost to lease the car?

Back

$4450, calculated as 2500 + 325*6.

Front

How do you evaluate the expression 3 x 15s - 6h when s = 1.5 and h = 3?

Back

49.5, calculated as 3 x 15(1.5) - 6(3).

Front

What does the expression 15n - 5 represent?

Back

It represents 5 less than the product of 15 and n.

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equality sign, while an equation does.

Front

What is a variable in an expression?

Back

A variable is a symbol (often a letter) that represents an unknown value.