Dividing with Expanded Notation

This lesson teaches how to divide using expanded notation. It begins with a review of breaking down multiplication into smaller parts and understanding expanded notation. The lesson then introduces smart estimation, demonstrating how to round numbers for easier division. Two examples are provided: dividing 1,315 by 5 and distributing 1,520 pencils among 10 students. Each example uses expanded notation to simplify the division process. The lesson concludes by reinforcing the concept of dividing using expanded notation.

What is the expanded notation of the number 2,615?

• 2,000 + 60 + 15

• 2,000 + 600 + 10 + 5

• 2,600 + 15

• 2,000 + 615

When making a smart estimate, what is the rounded number for 1,315 to make division easier?

• 1,300

• 1,500

• 1,000

• 1,350

What is the result of dividing 1,000 by 5 using expanded notation?

• 50

• 20

• 200

• 100

How many pencils does each student get when 1,520 pencils are divided among 10 students?

• 150

• 160

• 152

• 155

What is the smart estimate for dividing 1,520 by 10?

• 170

• 160

• 140

• 150