Exploring Expanded Notation with 3-Digit Numbers

This lesson introduces expanded notation, also known as expanded form, which is a method of writing numbers by showing the value of each digit. The video explains the use of place value blocks to represent hundreds, tens, and ones. It demonstrates how to write numbers in expanded form using multiplication and addition, with examples of numbers like 245 and 435. The lesson emphasizes understanding the value of each digit in a number and how to express it using expanded notation.

What is another term for expanded notation?

• Scientific notation

• Standard form

• Expanded form

• Fraction form

What does the flat place value block represent?

• Thousands

• Ones

• Tens

• Hundreds

How many squares are there in a rod place value block?

• 1

• 10

• 100

• 1000

Which place value block represents the ones place?

• Flat

• Rod

• Unit

• Cube

How many hundreds are there in the number 245?

• 5

• 1

• 2

• 4

What is the expanded form of 245?

• 2 x 100 + 4 x 10 + 5 x 1

• 2 x 1 + 4 x 10 + 5 x 100

• 2 x 100 + 4 x 1 + 5 x 10

• 2 x 10 + 4 x 100 + 5 x 1

What is the value of 4 groups of 10?

• 400

• 40

• 4

• 4000

How many groups of 100 are there in the number 435?

• 4

• 3

• 2

• 1

What is the expanded form of 435?

• 4 x 10 + 3 x 100 + 5 x 1

• 4 x 1 + 3 x 10 + 5 x 100

• 4 x 100 + 3 x 1 + 5 x 10

• 4 x 100 + 3 x 10 + 5 x 1

What is the sum of 400, 30, and 5?

• 455

• 405

• 475

• 435