# Write a number using calculator notation

Answers are provided in three formats: You can also do operations on whole numbers, integers, and decimal numbers and get answers in scientific notation. Expanded form decimals Video transcript Let's say I have the number So how could I expand this out? And what does this actually represent? So let's just think about each of the place values here.

The 9 right over here, this is in the hundreds place. This literally represents nine hundreds. So we could rewrite that 9 as nine hundreds. Let me write it two ways. We could write it aswhich is the same thing as 9 times Now, there's a 0.

That's just going to represent zero tens. But zero tens is still just 0. So we don't have to really worry about that. It's not adding any value to our expression or to our number. Now we have this 5. This 5 is in the ones place. It literally represents five ones, or you could just say it represents 5. Now, if we wanted to write it as five ones, we could say well, that's going to be 5 times 1. So far, we've representedplus 5 or 9 times plus 5 times 1. And you might say hey, how do I know whether I should multiply or add first?

Should I do this addition before I do this multiplication? And I'll always remind you, order of operations. In this scenario, you would do your multiplication before you do your addition.

So you would multiply your 5 times 1 and your 9 times before adding these two things together.Expanded form calculator shows expanded forms of a number including expanded notation form, expanded factor form, expanded exponential form and word form. Expanded form or expanded notation is a way of writing numbers to see the math value of individual digits.

number of places the decimal point must be moved so that the notation is in standard form x 10 0 For each place the decimal point is moved to the right, subtract 1 from the original exponent.

Write a number in decimal notation without exponents.

## Comparing Scientific and Standard Notation Numbers

Introduction This tutorial takes a look at the basic definition of scientific notation, an application that involves writing the number using an exponent on To see an exponent that’s negative, write in scientific notation..

Move the decimal place to the right to create a new number from 1 up to So, N = Determine the exponent, which is the number of times you moved the decimal. We can use a similar but opposite process to write very small numbers in scientific notation. Let’s return to the carbon atom that weighed grams.

To begin the process, we must move our decimal 23 times to the right. Isotope notation, also known as nuclear notation, is important because it allows us to use a visual symbol to easily determine an isotope's mass number, atomic number, and to determine the number of neutrons and protons in the nucleus without having to use a lot of words.

Worked example: Write decimal in expanded form (video) | Khan Academy