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How to Put A Scientific Calculator in Scientific Notation

Reviewed by Calculator Editorial Team

Scientific notation is a way of expressing very large or very small numbers in a compact form. It's widely used in science, engineering, and mathematics. This guide will show you how to properly enter scientific notation on your scientific calculator.

What is Scientific Notation?

Scientific notation is a method of writing numbers that are too large or too small to be conveniently written in decimal form. It's expressed as a product of two numbers: a coefficient and a power of 10.

Scientific Notation Formula

N = a × 10n

  • N = the original number
  • a = a coefficient between 1 and 10
  • n = an integer exponent

For example, the number 450,000,000 can be written in scientific notation as 4.5 × 108. Similarly, 0.00000032 can be written as 3.2 × 10-7.

How to Enter Scientific Notation

Most scientific calculators have a specific way to enter numbers in scientific notation. Here's how to do it on different calculator models:

On Casio FX-991ES Plus

  1. Press the "SHIFT" key
  2. Press the "EE" key (this stands for "exponent")
  3. Enter the coefficient (the number between 1 and 10)
  4. Press the "EE" key again
  5. Enter the exponent (the power of 10)

On Texas Instruments TI-30X IIS

  1. Enter the coefficient (the number between 1 and 10)
  2. Press the "EE" key
  3. Enter the exponent (the power of 10)

On HP Prime

  1. Enter the coefficient (the number between 1 and 10)
  2. Press the "×" key
  3. Press the "10" key
  4. Press the "^" key
  5. Enter the exponent (the power of 10)

Note

If your calculator doesn't have an "EE" or similar button, you can still enter scientific notation by multiplying the coefficient by 10 raised to the desired power.

Examples

Let's look at some examples of how to enter numbers in scientific notation on a calculator.

Example 1: Entering 6.022 × 1023

  1. Enter "6.022"
  2. Press the "EE" key
  3. Enter "23"
  4. Press "=" to see the result

Example 2: Entering 9.81 × 10-6

  1. Enter "9.81"
  2. Press the "EE" key
  3. Enter "-6"
  4. Press "=" to see the result

Example 3: Entering 1.618 × 100

  1. Enter "1.618"
  2. Press the "EE" key
  3. Enter "0"
  4. Press "=" to see the result

Common Mistakes

When entering numbers in scientific notation, there are several common mistakes to avoid:

1. Incorrect Coefficient

The coefficient must be between 1 and 10. Entering a coefficient of 12 or 0.5 is incorrect.

2. Missing the Exponent

Always include the exponent, even if it's zero. For example, 5 should be written as 5 × 100, not just 5.

3. Wrong Sign for the Exponent

For very small numbers, make sure the exponent is negative. For example, 0.001 is 1 × 10-3, not 1 × 103.

4. Forgetting to Press EE

On many calculators, you need to press the "EE" key to indicate that the next number is an exponent. Forgetting this can lead to incorrect results.

FAQ

Can I enter scientific notation directly on my calculator?

Yes, most scientific calculators have a specific way to enter numbers in scientific notation. Look for an "EE" or similar button on your calculator.

What if my calculator doesn't have an EE button?

If your calculator doesn't have an EE button, you can still enter scientific notation by multiplying the coefficient by 10 raised to the desired power.

How do I know if I've entered scientific notation correctly?

Your calculator should display the number in scientific notation format. For example, if you enter 6.022 × 1023, your calculator should show something like 6.022E23.

Can I use scientific notation for all calculations?

Scientific notation is most useful for very large or very small numbers. For numbers between 1 and 10, decimal notation is usually more straightforward.

What if I make a mistake when entering scientific notation?

If you make a mistake, simply clear your calculator and start over. Double-check each step to ensure you've entered the number correctly.