Order of Operations: Numbers

The video tutorial explains the order of operations in mathematics using the mnemonic 'Please Excuse My Dear Aunt Sally' to remember the sequence: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). It provides three examples to demonstrate how to apply these rules to simplify expressions, ensuring consistent results. The tutorial emphasizes the importance of following the order of operations for accurate mathematical evaluations.

What is the first step in the order of operations according to the mnemonic 'Please excuse my dear Aunt Sally'?

• Multiplication

• Addition

• Exponents

• Parentheses

In the expression 7 + 4 * 3, which operation should be performed first?

• Division

• Multiplication

• Subtraction

• Addition

What is the result of simplifying the expression 72 / 8 - 3^2 + 4?

• 14

• 9

• 0

• 4

When simplifying 17 - 12 + 5^2, what is the result after calculating the exponent?

• 25

• 17

• 5

• 12

Why is it important to follow the order of operations when evaluating expressions?

• To avoid using parentheses

• To get different results each time

• To ensure consistent results

• To make calculations faster