Multiplying Decimals and Powers of 10

The video tutorial explains a problem where a candy store uses 10.7 grams of sugar per hour and needs to calculate the total sugar used in 10 hours. It identifies this as a multiplication problem of 10.7 times 10. The tutorial then explains how to multiply decimals by powers of 10, specifically by moving the decimal point to the right based on the number of zeros in the multiplier. The final result is calculated as 107 grams of sugar.

How much sugar does the candy store use in one hour?

• 10.7 grams

• 107 grams

• 1.07 grams

• 0.107 grams

What mathematical operation is needed to find out the sugar usage in 10 hours?

• Division

• Multiplication

• Subtraction

• Addition

When multiplying a decimal by 10, how many places do you move the decimal point?

• One place to the left

• Two places to the left

• Two places to the right

• One place to the right

What is the result of multiplying 10.7 by 10?

• 1070

• 1.07

• 107

• 10.7

Why does the decimal point move when multiplying by powers of 10?

• Because it decreases the number

• Because it simplifies the number

• Because it increases the number

• Because of the number of zeros in the power of 10