Multiplying Whole Numbers and Decimals by 0.1 and 0.01

The video tutorial explains how to multiply numbers by one-tenth and one-hundredth. It begins with an introduction to the concept, followed by an explanation of how decimals move to the left when multiplying by these fractions. The tutorial provides examples with both whole and decimal numbers to illustrate the concept, emphasizing the importance of counting digits to the right of the decimal to determine the number of spaces to move the decimal.

What happens to the decimal point when you multiply a number by one-tenth?

• It moves one place to the right.

• It moves one place to the left.

• It moves two places to the right.

• It moves two places to the left.

If you multiply 35 by one-tenth, what is the result?

• 0.035

• 35.0

• 0.35

• 3.5

How many places does the decimal point move when multiplying by one-hundredth?

• One place to the left

• Two places to the left

• Two places to the right

• One place to the right

What is the result of multiplying 35 by one-hundredth?

• 0.35

• 35.0

• 3.5

• 0.035

When multiplying by one-tenth or one-hundredth, in which direction does the decimal point move?

• It depends on the number

• To the left

• To the right

• It stays in the same place

How can you remember the direction to move the decimal point when multiplying by one-tenth?

• Think of multiplying by 10

• Think of dividing by 10

• Think of dividing by 1 and then moving the decimal one place to the right

• Think of multiplying by 1 and then moving the decimal one place to the left

If you have 16.7 and multiply it by one-tenth, what is the result?

• 16.7

• 1.67

• 0.167

• 167.0

How many digits are to the right of the decimal in 16.7?

• One

• Two

• Three

• None

What is the result of multiplying 16.7 by one-hundredth?

• 1.67

• 0.167

• 0.0167

• 167.0

How many places does the decimal move when multiplying 16.7 by one-hundredth?

• Two places to the left

• Two places to the right

• One place to the right

• One place to the left