Multiplying Decimals by Powers of Ten

This video tutorial teaches how to multiply decimal numbers by powers of ten using place value understanding. It reviews multiples of ten and one hundred, explaining how digits shift left when multiplying by these powers. The lesson includes examples demonstrating the process and concludes with a summary of key points.

What is the main focus of this lesson?

• Dividing decimals

• Multiplying decimals by powers of ten

• Subtracting decimals

• Adding decimals

What do all multiples of ten have in common?

• They end in 5

• They end in 0

• They end in 1

• They end in 9

How many zeros do multiples of one hundred have at least?

• Three zeros

• Two zeros

• One zero

• Four zeros

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

• They disappear

• They stay the same

• They shift one place to the left

• They shift one place to the right

When multiplying by 100, how many places do the digits shift?

• One place to the right

• Two places to the left

• Three places to the right

• Two places to the right

In the example of 35 hundredths times ten, where does the digit 3 move?

• To the tenths place

• To the thousandths place

• To the ones place

• To the hundreds place

What is the result of shifting the decimal point to the right?

• The number becomes negative

• The number becomes smaller

• The number becomes larger

• The number stays the same

In the example of seventy-eight hundredths times one hundred, where does the digit 7 end up?

• In the ones place

• In the tens place

• In the tenths place

• In the hundreds place

What is the purpose of the decimal point in multiplication by powers of ten?

• To remove digits

• To hold the digits in the correct place

• To make the number negative

• To add zeros

What have you learned in this lesson?

• To multiply a decimal number by a power of ten using place value

• To divide decimals by powers of ten

• To add decimals

• To subtract decimals