Q: How is the number 156,425,720 written in Scientific Notation?

 A: 1.5642572 x 108

Why is 156,425,720 written as 1.5642572 x 108 in scientific notation?

The purpose of scientific notation is for scientists to write very large, or very small, numbers with ease.

Calculating scientific notation for a positive integer is simple, as it always follows this notation:

a x 10b

Follow the steps below to see how 156,425,720 is written in scientific notation.

Step 1

To find a, take the number and move a decimal place to the right one position.

  • Original Number: 156,425,720
  • New Number: 1.56425720

Step 2

Now, to find b, count how many places to the right of the decimal.

New Number: 1.56425720
Decimal Count: 12345678

There are 8 places to the right of the decimal place.

Step 3

Building upon what we know above, we can now reconstruct the number into scientific notation.

Remember, the notation is: a x 10b

a = 1.5642572 (Please notice any zeroes on the end have been removed)

b = 8

Now the whole thing:

1.5642572 x 108

Step 4

Check your work:

108 = 100,000,000 x 1.5642572 = 156,425,720


More Scientific Notation Examples

156,425,718156,425,719156,425,721156,425,722
1.56425718 x 1081.56425719 x 1081.56425721 x 1081.56425722 x 108

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