Decimal Representation and Multiplication

The video reviews multiplying decimals by 1/10 and 1/100, explaining why the decimal point moves left. It uses examples and bar models to illustrate the concept, emphasizing understanding over memorization. The video also covers multiplying whole numbers by fractions, showing how the product becomes smaller.

What is the main focus of this lesson?

• Dividing decimals

• Multiplying decimals by fractions

• Subtracting decimals

• Adding decimals

Why does the decimal point move to the left when multiplying by 1/10?

• Because the number stays the same

• Because the number gets 10 times smaller

• Because the number gets 100 times larger

• Because the number gets 10 times larger

How is 3/10 written as a fraction?

• 1/3

• 3/10

• 3/1

• 10/3

What is the result of multiplying 3/10 by 1/10?

• 1/100

• 3/100

• 3/10

• 1/10

What is the decimal representation of 3/10?

• 3.3

• 0.03

• 3.0

• 0.3

How is the number 3 written as a fraction?

• 10/3

• 3/10

• 1/3

• 3/1

What is the result of multiplying 3 by 1/10?

• 1/10

• 3/10

• 1/100

• 3/100

What is the decimal representation of 3/1?

• 0.03

• 0.3

• 3.0

• 3.3

What is the decimal representation of 1/10?

• 0.01

• 1.0

• 10.0

• 0.1

How is 30 written as a fraction?

• 10/30

• 30/10

• 1/30

• 30/1