Multiplying by Powers of Ten

The video tutorial explains how multiplying a whole number by a power of 10 affects the number of zeros at the end of the number. It uses examples to demonstrate that the number of zeros added is equal to the exponent of 10. The tutorial starts with simple examples and progresses to more complex ones, reinforcing the rule that multiplying by a power of 10 adds zeros to the right of the number. The lesson concludes by revisiting initial examples to solidify understanding.

What happens to the number of zeros when you multiply a whole number by 10 to the power of 5?

• The number of zeros decreases by 5.

• The number of zeros remains the same.

• Five zeros are added to the end of the number.

• The number becomes negative.

If you multiply 7 by 10 to the power of 2, what is the result?

• 7,000

• 700

• 70,000

• 70

How many zeros are added to the number 7 when multiplied by 10 to the power of 3?

• One zero

• Two zeros

• Three zeros

• Four zeros

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

• The number of zeros added is double the power of 10.

• The number of zeros added is equal to the power of 10.

• The number of zeros added is half the power of 10.

• The number of zeros added is always one less than the power of 10.

When multiplying 66 by 10 to the power of 5, what is the resulting number?

• 660,000,000

• 66,000,000

• 6,600,000

• 660,000