Evaluating Expressions

Front

What is the order of operations used to evaluate expressions?

Back

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

Front

How do you evaluate an expression with a variable?

Back

To evaluate an expression with a variable, substitute the variable with its given value and then perform the arithmetic operations according to the order of operations.

Front

What does it mean to evaluate an expression?

Back

Evaluating an expression means calculating its value by substituting variables with numbers and performing the necessary arithmetic operations.

Front

What is the value of the expression 9 - (8/a + 3) when a = 2?

Back

The value is 2.

Front

How do you evaluate the expression 2a + 4b when a = 10 and b = 6?

Back

Substitute a and b into the expression: 2(10) + 4(6) = 20 + 24 = 44.

Front

What is the result of evaluating m - n when m = 29 and n = 11?

Back

The result is 18.

Front

How do you simplify the expression 2(a - 5) + 2 when a = 15?

Back

Substitute a with 15: 2(15 - 5) + 2 = 2(10) + 2 = 20 + 2 = 22.

Front

What is the value of the expression 4h + 2g + 4 when g = 3 and h = 9?

Back

The value is 46.

Front

What is a variable in an expression?

Back

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

Front

What is a constant in an expression?

Back

A constant is a fixed value that does not change, such as numbers like 2, 3, or 10.