Q: How is the number 79 written in Scientific Notation?

 A: 7.9 x 101

Why is 79 written as 7.9 x 101 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 79 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: 79
  • New Number: 7.9

Step 2

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

New Number: 7.9
Decimal Count: 1

There are 1 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 = 7.9

b = 1

Now the whole thing:

7.9 x 101

Step 4

Check your work:

101 = 10 x 7.9 = 79


More Scientific Notation Examples

77788081
7.7 x 1017.8 x 1018 x 1018.1 x 101

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