Order of Operations in Mathematics

Maria from Math Mammoth introduces the concept of order of operations, focusing on addition, subtraction, and multiplication. She explains the importance of following the correct order, starting with multiplication before addition and subtraction. Through examples and practice problems, Maria demonstrates how to apply these rules, emphasizing the left-to-right approach for operations of the same precedence. The lesson concludes with a practice problem to reinforce the learning.

What operations are focused on in this lesson?

• Addition, Division, and Multiplication

• Addition, Subtraction, and Division

• Multiplication, Division, and Subtraction

• Addition, Subtraction, and Multiplication

In the expression 20 - 5 + 6, which operation should be performed first?

• Division

• Addition

• Subtraction

• Multiplication

When solving 2 + 3 * 4, what is the correct order of operations?

• Subtract first, then add

• Multiply first, then add

• Add first, then multiply

• Divide first, then multiply

Why is multiplication performed before addition in order of operations?

• Because it is easier

• Because it is a rule set by mathematicians

• Because it is faster

• Because it is more common

In the expression 5 * 3 - 15, what should be calculated first?

• Subtraction

• Addition

• Multiplication

• Division

What is the result of 2 * 9 - 12 + 5?

• 14

• 13

• 12

• 11

In the expression 3 + 20 - 5, which operation should be performed first?

• Subtraction

• Addition

• Multiplication

• Division

What is the result of 9 + 9 * 9?

• 99

• 90

• 108

• 81