6.EE.1-2 Writing and Evaluating Expressions Flashcard

Front

What is a variable in mathematics?

Back

A symbol for a number we don't know yet, usually represented by a letter.

Front

Identify the variables in the expression: 3z + 4x - 1 + 7y.

Back

The variables are z, x, and y.

Front

What is the value of 6 raised to the power of 3?

Back

216.

Front

How can 8 raised to the power of 6 be expressed in multiplication?

Back

8 x 8 x 8 x 8 x 8 x 8.

Front

Define an algebraic expression.

Back

An expression that contains one or more variables and may also contain operation symbols such as + or -.

Front

What is the difference between a numerical expression and an algebraic expression?

Back

A numerical expression contains only numbers and operations, while an algebraic expression contains variables, numbers, and operations.

Front

What does it mean to evaluate an expression?

Back

To calculate the value of an expression by substituting variables with numbers.

Front

What is the order of operations in mathematics?

Back

The order is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right), often abbreviated as PEMDAS.

Front

What is an exponent?

Back

An exponent indicates how many times a number (the base) is multiplied by itself.

Front

How would you simplify the expression: 2(x + 3) + 4?

Back

2x + 6 + 4 = 2x + 10.