Evaluating Expressions with Integers

The video tutorial explains how to evaluate mathematical expressions using the order of operations. It begins by simplifying the innermost parentheses and proceeds step-by-step through two examples. The first example involves adding and subtracting negative numbers, while the second example demonstrates handling more complex expressions, including zero sums. The tutorial emphasizes working from left to right and simplifying within parentheses first.

What is the first step in evaluating an expression using the order of operations?

• Simplify the outermost parentheses

• Add all numbers first

• Simplify the innermost parentheses

• Multiply all numbers first

What is the result of the expression 3 + -9?

• -12

• -6

• 6

• 12

After simplifying 15 + -6, what is the next expression to evaluate?

• +9 + 7

• 15 + 9

• 15 + -7

• +9 + -7

In the second example, what is the result of -12 + +7?

• -19

• -5

• 5

• 19

What is the final result of the expression 0 + -4?

• 4

• -4

• 0

• -8