Multiplying Decimals by Powers of Ten

What is the rule for multiplying a whole number by a power of 10?

• Add as many zeros to the right of the number as the power.

• Add as many zeros to the left of the number as the power.

• Divide the number by 10.

• Multiply the number by 10.

Why doesn't the rule for whole numbers work for decimals?

• Decimals are always less than whole numbers.

• Adding a zero to the right end of a decimal does not change its value correctly.

• Decimals cannot be multiplied by powers of 10.

• Decimals need to be divided by powers of 10.

What does the zero at the end of a decimal represent?

• A value of 0.1.

• A value of 1.

• A value of 10.

• No value.

What happens when you multiply the whole number part of a decimal by 10?

• The whole number part is subtracted by 10.

• The whole number part is multiplied by 10.

• The whole number part is divided by 10.

• The whole number part remains the same.

What is the result of multiplying 1 by 10?

• 100

• 0.1

• 1

• 10

What is the result of multiplying 0.25 by 10?

• 2.5

• 0.025

• 25

• 0.0025

What does multiplying each decimal by 10 result in?

• Each decimal moves one place to the left.

• Each decimal moves one place to the right.

• Each decimal remains in the same place.

• Each decimal is divided by 10.

What does the digit in one place represent compared to the place to its right?

• A value 10 times greater.

• A value 100 times greater.

• A value 10 times smaller.

• The same value.

What happens to the decimal point when multiplying by 10?

• It disappears.

• It moves one place to the right.

• It moves one place to the left.

• It remains in the same place.

What is the result of multiplying 1.25 by 10?

• 1.250

• 0.125

• 125

• 12.5