Q: How is the number 686,506,141 written in Scientific Notation?

 A: 6.86506141 x 108

Why is 686,506,141 written as 6.86506141 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 686,506,141 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: 686,506,141
  • New Number: 6.86506141

Step 2

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

New Number: 6.86506141
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 = 6.86506141

b = 8

Now the whole thing:

6.86506141 x 108

Step 4

Check your work:

108 = 100,000,000 x 6.86506141 = 686,506,141


More Scientific Notation Examples

686,506,139686,506,140686,506,142686,506,143
6.86506139 x 1086.8650614 x 1086.86506142 x 1086.86506143 x 108

Explore more about the number 686,506,141:


Ask a Question