Representing Decimal Numbers in Expanded Notation Using Base 10 Blocks

This lesson teaches how to read and write numbers to the thousandths in expanded notation using base 10 blocks. It explains the concept of place value and demonstrates how to express numbers like 3841 and decimals such as 2.486 and 4.032 in expanded notation. The lesson emphasizes understanding the value of each digit based on its position and using decimal fractions to determine these values.

What determines the value of a digit in a number?

• The shape of the digit

• The size of the digit

• The position of the digit

• The color of the digit

In the number 3841, what is the value of the digit 8?

• 8

• 80

• 800

• 8000

How is the number 2.486 expressed in expanded notation?

• 2 + 4/10 + 8/1000 + 6/100

• 2 + 4/100 + 8/10 + 6/1000

• 2 + 4/1000 + 8/10 + 6/100

• 2 + 4/10 + 8/100 + 6/1000

What is the value of the digit 6 in the number 2.486?

• 6/1000

• 6

• 6/10

• 6/100

In the number 4.032, what is the value of the digit 3?

• 3/1000

• 3

• 3/10

• 3/100