Multiplying and Dividing Decimals by Powers of 10

What is the effect of multiplying by 10 on the number 4.5?

• It becomes 40.5.

• It becomes 45.0.

• It becomes 4.50.

• It becomes 50.0.

What happens to a decimal when you multiply it by 10?

• The decimal moves one place to the left.

• The decimal moves one place to the right.

• The decimal remains in the same place.

• The decimal doubles in value.

What happens to a decimal when you divide it by 10?

• The decimal moves one place to the left.

• The decimal moves one place to the right.

• The decimal remains in the same position.

• The decimal doubles in value.

How do you multiply a decimal by a power of 10?

• Move the decimal point to the right for each zero in the power of 10.

• Move the decimal point to the left for each zero in the power of 10.

• Add the number of zeros to the decimal point without moving it.

• Multiply the decimal by 10 for each zero in the power of 10.

What is 0.5 ÷ 10?

• 0.05

• 0.5

• 0.1

• 0.01

What is the effect of dividing 90 by 10?

• 8

• 9

• 10

• 7

What is the result of 0.05 x 100?

• 4.0

• 5.0

• 6.0

• 5.5

How do you divide a decimal by a power of 10?

• Move the decimal point to the left for each zero in the power of 10.

• Move the decimal point to the right for each zero in the power of 10.

• Multiply the decimal by the power of 10.

• Leave the decimal point in the same position.

What is 5.67 ÷ 1000?

• 0.0567

• 0.00567

• 0.567

• 0.000567

What is 23.1 x 10?

• 210

• 220

• 231

• 240