# Q: How is the number 315,487 written in Scientific Notation?

A: 3.15487 x 105

## Why is 315,487 written as 3.15487 x 105 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 315,487 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: 315,487
• New Number: 3.15487

### Step 2

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

 New Number: 3 . 1 5 4 8 7 Decimal Count: 1 2 3 4 5

There are 5 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 = 3.15487

b = 5

Now the whole thing:

3.15487 x 105

### Step 4

105 = 100,000 x 3.15487 = 315,487

### More Scientific Notation Examples

 315,485 315,486 315,488 315,489 3.15485 x 105 3.15486 x 105 3.15488 x 105 3.15489 x 105

### Explore more about the number 315,487:

General Questions
Factoring Questions
Calculation Questions
Miscellaneous Questions