Confidently Multiplying Decimals by Powers of Ten

What happens when you multiply a number by 10?

• A zero is added to the end of the number.

• The number becomes ten times smaller.

• The number remains unchanged.

• The number moves one decimal place to the right.

If you multiply 23 by 10, what is the result?

• 230

• 2300

• 23.0

• 2.3

What is the effect of multiplying a decimal number by 10?

• It becomes ten times smaller.

• It loses its decimal value.

• It remains the same.

• It becomes ten times larger.

What is the purpose of place-holding zeros in multiplication?

• To fill empty tens and hundreds places.

• They have no purpose.

• To indicate the decimal places moved.

• To increase the value of the number.

How do you adjust the decimal point when multiplying by 100?

• Add two zeros to the end.

• Move it two places to the right.

• Move it two places to the left.

• No adjustment needed.

What is the result of multiplying a number by 1000?

• Move the decimal three places to the left.

• Add three zeros to the end.

• The number becomes 1000 times smaller.

• Move the decimal three places to the right.

Can place-holding zeros be omitted in the final answer?

• Yes, but only in multiplication by 10.

• No, they are always necessary.

• Yes, if they are not needed for decimal places.

• No, they indicate the value of the number.

When multiplying by 100, how many places should the decimal point move?

• It does not move.

• One place to the right.

• Two places to the right.

• Three places to the right.

What is the correct way to handle zeros when multiplying by powers of 10?

• Keep all zeros for clarity.

• Remove all zeros as they are unnecessary.

• Only keep zeros that are between non-zero digits.

• Discard place-holding zeros not needed for decimal places.