Multiplying Decimals by 10

The video tutorial explains how to multiply decimals by 10. It covers three examples: 1.64, 19.5, and 0.54. The key concept is that when multiplying by 10, the decimal point remains in place while all digits move one place to the left. The tutorial emphasizes the importance of understanding the role of zero in decimal multiplication.

What happens to the decimal point when you multiply a decimal number by 10?

• It moves one place to the left.

• It stays in the same position.

• It moves one place to the right.

• It disappears.

When multiplying a decimal by 10, what happens to the digits?

• They stay in the same position.

• They move one place to the right.

• They disappear.

• They move one place to the left.

When multiplying 1.64 by 10, what is the resulting number?

• 1.64

• 16.4

• 164

• 0.164

In the example of 1.64, which digit moves to the leftmost position after multiplication by 10?

• 1

• 6

• 0

• 4

In the example of multiplying 19.5 by 10, what is the correct result?

• 1950

• 19.5

• 1.95

• 195

What is the result of multiplying 19.5 by 10 if the decimal point is ignored?

• 19.5

• 195

• 1950

• 1.95

Why is it unnecessary to write zeros after the decimal point in 195.000?

• Because they are required for accuracy.

• Because they do not change the value of the number.

• Because they are placeholders.

• Because they add value to the number.

Why is a zero not needed in the tens place when multiplying decimals by 10?

• Because it is a placeholder.

• Because it holds no value.

• Because it is required for accuracy.

• Because it changes the number.

What is the importance of keeping a zero before the decimal point?

• It shows there is no whole number value.

• It changes the value of the number.

• It is required for multiplication.

• It indicates a whole number value.

What is the correct result of multiplying 0.54 by 10?

• 5.4

• 54

• 540

• 0.54