Evaluate Expressions

Front

What is the process of evaluating an expression?

Back

Evaluating an expression involves substituting values for variables and performing the arithmetic operations according to the order of operations (PEMDAS/BODMAS).

Front

What does PEMDAS stand for in the context of evaluating expressions?

Back

PEMDAS stands for Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

How do you evaluate an expression with multiple variables?

Back

To evaluate an expression with multiple variables, substitute the given values for each variable and then perform the arithmetic operations.

Front

What is the value of the expression 14 + x ÷ 2 when x = 4?

Back

The value is 16.

Front

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

Back

Substituting a = 15 gives 2(15 - 5) + 2 = 2(10) + 2 = 20 + 2 = 22.

Front

What is the result of evaluating 8y + 12 - 2z for y = 4 and z = 2?

Back

The result is 40.

Front

What is the first step in evaluating the expression 2(a - 5) + 2?

Back

The first step is to evaluate the expression inside the parentheses, which is (a - 5).

Front

What is the significance of the order of operations in evaluating expressions?

Back

The order of operations ensures that expressions are evaluated consistently and correctly, preventing ambiguity in calculations.

Front

How do you handle division in an expression when evaluating?

Back

When evaluating, perform division as per the order of operations, from left to right, after handling any parentheses and exponents.

Front

What is the result of the expression -59 when x = -8 and y = -9?

Back

The expression evaluates to -59 based on the specific values of x and y.