# Q: How is the number 789 written in Scientific Notation?

A: 7.89 x 102

## Why is 789 written as 7.89 x 102 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 789 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: 789
• New Number: 7.89

### Step 2

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

 New Number: 7 . 8 9 Decimal Count: 1 2

There are 2 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 = 7.89

b = 2

Now the whole thing:

7.89 x 102

### Step 4

102 = 100 x 7.89 = 789

### More Scientific Notation Examples

 787 788 790 791 7.87 x 102 7.88 x 102 7.9 x 102 7.91 x 102

### Explore more about the number 789:

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