These worksheets help students identify situation where they are required to process an addition operation. In most cases, students need to understand what addends are and having an understanding about the concept of sums. We also get a little crazy with the math facts and are looking for more motivated learners to slap together larger sums. As we carry on, we add double sentences and more convoluted sentences that add a degree of difficulty to the problems. In math, and science for that matter, terminology is often referred to as notation and that comes up often.

# Print Missing Addend Worksheets

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Missing Addend Lesson

Two of the addends are 10 and 13, and the sum is 39. Find the third addend. The numbers you add are addends and the answer is called sum. Addends given are 10 and 13.

## Three Different Sums Worksheet

Write 30 as sums in three different ways. We show you how and then we throw two more practice problems at you.

## The 4th Adddend Worksheet

The problem types that you'll see are: The addends are 35, 40, 90. Find the sum. The sum is 90. The three addends are 10, 20, 44. Find the fourth addend. The sum is 500. The three addends are 190, 200, 23. Find the fourth addend. The sum of four numbers is 190. The three addends are 10, 55, 68. Find the fourth number.

## Missing Addends Worksheet

The sum of three numbers is 100. If two of the numbers are 20, 50, then find the third number. The addends are 140 and 130. The sum is 300. Find the third addend.

## What is the Terminology Associated With Addition?

Addition is a vital part of mathematics and a concept that students should learn early on. When most people think of addition, they think of basic arithmetic: adding numbers together to get a sum. But in mathematics, addition is a much more complex concept than counting.

Addition can be used in mathematics to solve problems in geometry, algebra, and other areas of math as it can be used to add objects together, like points on a line or angles in a triangle, and also combine values, like adding two lengths to get a total length.

**Properties**

Many properties of addition make it helpful for solving mathematical problems.

Some of these properties include:

The commutative property (the order of addition does not matter).

- The Closure Property (the result of adding two whole numbers will always be a whole number),
- The Associative Property (the order of addition does not matter when adding more than two numbers).
- The Additive Identity Property (adding zero to any number will not change that number).

**Terminologies Used in Addition**

We used some particular terminologies in addition, such as addend, Augend, and sum.

An addend is a number that is added to another number. The sum is the result of adding two or more numbers together. In other words, the answer to an additional problem. In the picture above, there are three addends: 7 + 11 + 5 = 23.

While Augend is a number to which another addend gets added.

The terms "addend" and "augend" can be used interchangeably, but they mean slightly different things. An addend is any number that is added to another number. The Augend is the number to which other number gets added.

But as you know, when you add more than two numbers together, the order in which you add them does not matter. This is because addition is commutative, meaning that the order of the addends does not affect the sum. For example, the sum of 7 + 5 is the same as that of 5 + 7. This is not true for all operations but is valid for addition.

Another essential thing to remember is that you can regroup when adding numbers together. This means you can add the numbers in any order you want, as long as you get the same answer.

In the example above, we could have added the 7 and the 11 first and then added the 5 to that result, or we could have added the 5 and the 11 first and then added the 7 to that result. As long as we ended up with 23 in the end, it would be correct!

**Final Words**

Addition is a complex concept with many different terms associated with it. In this article, we explored some of the most critical terminology related to addition, including addends and augends and commutative property. With a little practice, students will be able to use addition to solve problems in geometry, algebra, and other areas of math.