Converting Scientific Notation Practice

The video tutorial explains how to convert numbers in scientific notation to standard notation by moving the decimal point. It uses the example of 3.1 times 10 to the 4th, demonstrating how to multiply by powers of 10 and adjust the decimal point accordingly. The tutorial concludes with a practice problem involving 3.1 times 10 to the 21.

What number is used as an example to explore scientific notation?

• 5.3 times 10 to the 6th

• 2.5 times 10 to the 3rd

• 3.1 times 10 to the 4th

• 4.2 times 10 to the 5th

How can 10 to the 4th power be expressed in standard form?

• 10,000

• 1,000

• 1,000,000

• 100,000

What happens to a number when it is multiplied by 10?

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

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

• The decimal point moves one place to the right.

• The decimal point moves one place to the left.

In the example, what is the first step when moving the decimal point for 10 to the 4th power?

• Move the decimal two places to the left.

• Add one zero to the number.

• Move the decimal one place to the right.

• Add two zeros to the number.

After moving the decimal point four times, what is the final number obtained from 3.1 times 10 to the 4th?

• 310,000

• 31,000

• 3,100,000

• 3,100

What is the invisible aspect of numbers without decimals?

• The decimal point is always at the end.

• The decimal point is always at the beginning.

• The decimal point is always in the middle.

• The decimal point is always visible.

How many times do you need to move the decimal point for 10 to the 4th power?

• Five times

• Four times

• Three times

• Two times

What is the first number obtained after moving the decimal point once for 3.1 times 10 to the 4th?

• 3,100

• 310

• 31,000

• 31

What is the second number obtained after moving the decimal point twice for 3.1 times 10 to the 4th?

• 31

• 31,000

• 310

• 3,100

What is the third number obtained after moving the decimal point three times for 3.1 times 10 to the 4th?

• 3,100

• 31,000

• 31

• 310