Q: How is the number 2,151,388 written in Scientific Notation?

 A: 2.151388 x 106

Why is 2,151,388 written as 2.151388 x 106 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 2,151,388 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: 2,151,388
  • New Number: 2.151388

Step 2

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

New Number: 2.151388
Decimal Count: 123456

There are 6 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 = 2.151388

b = 6

Now the whole thing:

2.151388 x 106

Step 4

Check your work:

106 = 1,000,000 x 2.151388 = 2,151,388


More Scientific Notation Examples

2,151,3862,151,3872,151,3892,151,390
2.151386 x 1062.151387 x 1062.151389 x 1062.15139 x 106

Explore more about the number 2,151,388:


Ask a Question