Q: How is the number 2,155,495 written in Scientific Notation?

 A: 2.155495 x 106

Why is 2,155,495 written as 2.155495 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 2,155,495 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: 2,155,495
  • New Number: 2.155495

Step 2

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

New Number: 2.155495
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 = 2.155495

b = 6

Now the whole thing:

2.155495 x 106

Step 4

Check your work:

106 = 1,000,000 x 2.155495 = 2,155,495


More Scientific Notation Examples

2,155,4932,155,4942,155,4962,155,497
2.155493 x 1062.155494 x 1062.155496 x 1062.155497 x 106

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