Math Basics

Basic Mathematical Operations

What is addition?

Addition is an operation in which two numbers, called the addends, produce a third number called the sum. Natural numbers are added by starting with the first addend and counting as many more numbers as the second addend. For example, for 2 + 4, you would think 2, 3 (as the first number after 2), 4 (as the second number), 5 (as the third number), and 6 (as the fourth number), thus the numbers add up to 6. Not all numbers are added in the same way as natural numbers.


This is a web preview of the "The Handy Math Answer Book" app. Many features only work on your mobile device. If you like what you see, we hope you will consider buying. Get the App