Expanded Notation and Place Value

The video tutorial introduces the concept of expanded notation, where a number is expressed as the sum of the place values of its digits. It uses examples of balloon-bursting games to illustrate this concept. Andy bursts 421 balloons, and the video explains how to write this number in expanded form as 400 + 20 + 1. Similarly, Annie bursts 125 balloons, and Amy bursts 359 balloons, with each number broken down into its expanded form. The tutorial also explains how to convert numbers from expanded form back to standard form, reinforcing the understanding of place value.

What is expanded notation?

• Writing a number in words

• Writing a number as a fraction

• Writing a number as the sum of the place value of its digits

• Writing a number as a product of its digits

In the number 421, what is the place value of the digit 4?

• Forty

• Four hundred

• Four

• Four thousand

How do you write the number 421 in expanded form?

• 4 + 2 + 1

• 40 + 2 + 1

• 400 + 20 + 1

• 4000 + 200 + 10

What is the standard form of the expanded notation 400 + 20 + 1?

• 124

• 142

• 412

• 421

In the number 125, what is the place value of the digit 2?

• Two hundred

• Two thousand

• Twenty

• Two

How do you write the number 125 in expanded form?

• 10 + 2 + 5

• 100 + 20 + 5

• 1 + 2 + 5

• 1000 + 200 + 50

What is the standard form of the expanded notation 100 + 20 + 5?

• 125

• 152

• 215

• 512

In the number 359, what is the place value of the digit 5?

• Five hundred

• Fifty

• Five thousand

• Five

How do you write the number 359 in expanded form?

• 30 + 5 + 9

• 3000 + 500 + 90

• 3 + 5 + 9

• 300 + 50 + 9

Who won the balloon bursting competition?

• Andy

• Both Annie and Amy

• Amy

• Annie