Have you ever seen extremely large or small numbers that are very hard to work with? That’s where scientific e notation comes in to make things easier. It’s a way to express these numbers using a coefficient and the letter ‘e’ representing an exponent raised to a power of 10.

## What are decimal numbers and scientific e-notation?

**Decimal Number:**

Decimal numbers are the numbers we use every day for counting and measuring. They include whole numbers, like 1, 2, 3, and so on, and also numbers with fractions, like 1.5, 3.75, or 0.25. The word “decimal” comes from the Latin word “decimus,” which means tenth. Decimal numbers are based on the powers of ten, and the digits to the right of the decimal point show values smaller than 1.

For example:

- The number 25 is a whole number.
- The number 25.5 has a whole number part (25) and a fractional part (0.5).
- The number 0.25 is smaller than 1 and represents a quarter of a whole unit.

**Scientific E Notation:**

Scientific e notation is a special way to write very large or very small numbers more easily. It uses the letter ‘e’ (which stands for exponent) to indicate powers of ten. In scientific e notation, a number is represented in the form of “a × 10^b,” where ‘a’ is a number between 1 and 10 (the coefficient), and ‘b’ is the power to which 10 is raised.

For instance:

- The number 6,000,000 in scientific e notation could be written as 6e6 or 6e+6, where ‘6’ is between 1 and 10, and ‘6’ represents the power of 10.
- A small number like 0.000005 might be expressed as 5e-6, where ‘5’ is between 1 and 10, and ‘-6’ signifies the power of 10 as a negative exponent.
- Similarly, smaller numbers like 0.00000005 can be written in scientific e notation as 5e-8. Here, ‘5’ is the coefficient between 1 and 10, and the ‘-8’ indicates 10 raised to the power of -8, showing how the decimal point moves to represent the original number, 0.00000005.

In scientific e notation, the ‘e’ simplifies the way to represent extremely large or small numbers by showing the coefficient and the power of ten. This makes it easier for scientists, mathematicians, and researchers to work with numbers that vary greatly in size.

Essentially, decimal numbers are the ones we commonly use in our day-to-day lives, while scientific e notation is a compact and convenient way to express really big or really small numbers using a coefficient and a power of 10.

## Convert Decimal Number To Scientific Notation

Converting numbers to scientific e notation involves identifying a coefficient between 1 and 10 and indicating how many places the decimal point moves, expressed as a power of 10 using ‘e’ notation. This method simplifies complex numbers, making them more manageable, especially in scientific and mathematical contexts.

But to save you from this time-consuming manual calculation work, this online tool is available to quickly convert numbers into scientific e notation, making the process easier, especially for those less familiar with the conversion process.

Scientific e notation is incredibly useful, particularly in fields like science and engineering, where dealing with large or small numbers is frequent. It simplifies complex calculations and represents values in a concise and manageable form.

For better understanding of the conversion process from decimal numbers to scientific notations, you can refer to the table below, where a variety of decimal values are paired with their respective scientific notations, showcasing how large and small numbers can be represented in a simplified and standardized format.

### Conversion Table:

Decimal Number | Scientific Notation |
---|---|

0.00000001 | 1e-08 |

58791.267 | 5.8791267e+4 |

0.000589 | 5.89e-04 |

1000000000 | 1e+09 |

0.000007 | 7e-06 |

1250000 | 1.25e+06 |

987654.321 | 9.87654321e+05 |

0.000001 | 1e-06 |

44444444 | 4.4444444e+07 |

777.777 | 7.77777e+02 |

0.00025 | 2.5e-04 |

9999999999 | 9.999999999e+09 |

333333.333 | 3.33333333e+05 |

0.000000005 | 5e-09 |

1234567890 | 1.23456789e+09 |

0.000123 | 1.23e-04 |

1234567 | 1.234567e+06 |

66666666 | 6.6666666e+07 |

0.000009 | 9e-06 |

2500000 | 2.5e+06 |

88888888 | 8.8888888e+07 |

111.111 | 1.11111e+02 |

0.00075 | 7.5e-04 |

333333333 | 3.33333333e+08 |

0.000000003 | 3e-09 |

987654321 | 9.87654321e+|08 |

4444.444 | 4.444444e+03 |

0.0025 | 2.5e-03 |

5000000 | 5e+06 |

123456789 | 1.23456789e+08 |

888.888 | 8.88888e+02 |

0.000444 | 4.44e-04 |

99999999 | 9.9999999e+07 |

7777.777 | 7.777777e+03 |

0.0075 | 7.5e-03 |

6666666 | 6.666666e+06 |

0.000000009 | 9e-09 |

250000000 | 2.5e08 |

11111111 | 1.1111111e+07 |

987.654 | 9.87654e+02 |

0.00444 | 4.44e-03 |

12345678 | 1.2345678e07 |

55555555 | 5.5555555e07 |

0.000025 | 2.5e-05 |

8888888 | 8.888888e+06 |

5000000000 | 5e+09 |

0.111111 | 1.11111e-01 |

77777777 | 7.7777777e+07 |

0.0000009 | 9e-07 |

9876543 | 9.876543e+06 |

666.666 | 6.66666e+02 |

In summary, scientific e notation is a compact and handy way to express large or small numbers using a coefficient and ‘e’ notation to indicate the power of 10, making these numbers more understandable and easier to work with, particularly in scientific contexts.