Addition
Addition is the basic operation of arithmetic. In its simplest form, addition combines two numbers, the addends or terms, into a single number, the sum.
Adding more than two numbers can be viewed as repeated addition; this procedure is known as summation and includes ways to add infinitely many numbers in an infinite series; repeated addition of the number one is the most basic form of counting.
Addition is commutative and associative so the order in which the terms are added does not matter. The identity element of addition (the additive identity) is 0, that is, adding zero to any number will yield that same number. Also, the inverse element of addition (the additive inverse) is the opposite of any number, that is, adding the opposite of any number to the number itself will yield the additive identity, 0. For example, the opposite of 7 is (7), so 7 + (7) = 0. Addition can be given geometrically as follows.
If a and b are the lengths of two sticks, then if we place the sticks one after the other, the length of the stick thus formed will be a+b
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addition videos replace textbased tutorials and give you better stepbystep explanations of addition. Watch each video repeatedly until you understand how to approach addition problems and how to solve them.
 Hundreds of video tutorials on addition make it easy for you to better understand the concept.
 Hundreds of word problems on addition give you all the practice you need.
 Hundreds of printable worksheets on addition let you practice what you have learned by watching the video tutorials.
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Top Addition Worksheets
addition, arithmetic operations, operations, addition of decimals, decimals, number sense, operations with decimals, subtraction, subtraction of decimals, .
Adding And Subtracting Decimals Mixed Review Example Video Clip
Adding And Subtracting Decimals Mixed Review Example
Video Clip Length: 3 minutes 16 seconds
Video Clip Views: 98914
This clip solves a given decimal addition and subtraction question:
1.867  0.43 + 72.491  25.4
video, adding decimals, addition, addition of decimals, arithmetic operations, decimal addition, decimals, number sense, numbers, operations, operations with decimals, subtracting decimals, subtraction, subtraction of decimals
Simplifying Using Distributive Property With Negative Coefficients Video Clip
Simplifying Using Distributive Property With Negative Coefficients
Video Clip Length: 1 minute 59 seconds
Video Clip Views: 38122
This math video tutorial clip shows how to simplify algebraic expressions by following the rules of order of operations, distributive property and combining like terms.
Distributive property helps us get rid of the paranthesis first and then we combine the like terms to reach the solution.
addition, arithmetic operations, distributive property, expressions, multiplication, operations, properties of addition, properties of multiplication, simplifying expressions
Adding Fractions With Like Denominators Video Clip
Adding Fractions With Like Denominators
Video Clip Length: 1 minute 13 seconds
Video Clip Views: 32889
This tutorial shows how to add two fractions with like denominators: 3/7 and 2/7.
video, adding fractions, addition, addition of fractions, arithmetic operations, denominator, fractions, like denominators, number sense, numbers, operations, operations with fractions
Adding Fractions With Unlike Denominators Video Clip
Adding Fractions With Unlike Denominators
Video Clip Length: 4 minutes 19 seconds
Video Clip Views: 30043
adding fractions, addition, addition of fractions, arithmetic operations, denominator, fractions, like denominators, number sense, numbers, operations, operations with fractions, unlike denominators
Commutative Property Of Addition Video Clip
Commutative Property Of Addition
Video Clip Length: 23 seconds
Video Clip Views: 29945
addition, arithmetic operations, commutative property, commutative property of addition, operations, properties of addition
Adding Multiple Decimal Addends Video Clip
Adding Multiple Decimal Addends
Video Clip Length: 2 minutes 9 seconds
Video Clip Views: 28271
This tutorial will be able to show you how to add different decimal places. You will be able to line up the decimal places according to their decimal places and then be able to see where we place the decimal in our final answer.
adding decimals, addition, addition of decimals, arithmetic operations, decimal addition, decimals, number sense, numbers, operations, operations with decimals
Adding Decimals Video Clip
Adding Decimals
Video Clip Length: 41 seconds
Video Clip Views: 26197
This tutorial will show you how to add decimals with various decimal places. It will help you learn how to line up the decimals and even show you where to place the decimal place in the sum.
adding decimals, addition, addition of decimals, arithmetic operations, decimal addition, decimals, number sense, numbers, operations, operations with decimals
Adding Decimals Money Values Video Clip
Adding Decimals Money Values
Video Clip Length: 1 minute 7 seconds
Video Clip Views: 22508
This tutorial will show you how to add decimals with different decimal places. We are given dollar values, which have decimal places up to the hundredths places. You will learn how to add dollar values, cent values and line up the decimal places and where the decimal will be placed in your final answer.
adding decimals, addition, addition of decimals, arithmetic operations, decimal addition, decimals, money values, number sense, numbers, operations, operations with decimals
Adding Fractions With Unlike Denominators 6 Video Clip
Adding Fractions With Unlike Denominators 6
Video Clip Length: 2 minutes 35 seconds
Video Clip Views: 21610
adding fractions, addition, addition of fractions, arithmetic operations, denominator, fractions, like denominators, number sense, numbers, operations, operations with fractions, unlike denominators
Adding Fractions With Unlike Denominators 2 Video Clip
Adding Fractions With Unlike Denominators 2
Video Clip Length: 5 minutes 14 seconds
Video Clip Views: 21291
adding fractions, addition, addition of fractions, arithmetic operations, denominator, fractions, like denominators, number sense, numbers, operations, operations with fractions, unlike denominators
Top Addition Word Problems

The attendance at a ball game was 400 people (#72)
The attendance at a ball game was 400 pe... ...w many of each type of ticket were sold?
addition, arithmetic operations, distributive property, multiplication, operations, properties of addition, properties of multiplication

distributive property (#528)
You have six gummy worms and eleven stic... ...Use the distributive property to solve.
addition, arithmetic operations, distributive property, multiplication, operations, properties of addition, properties of multiplication

Kent is 14 years older than Harlen (#256)
Kent is 14 years older than Harlen.
Nex... ...mes older than Harlen.
How old is Kent?
addition, arithmetic operations, distributive property, multiplication, operations, properties of addition, properties of multiplication

Students were asked to choose (#924)
Students were asked to choose their favo... ...raction chose either history or biology?
adding fractions, addition, addition of fractions, arithmetic operations, fractions, number sense, numbers, operations, operations with fractions

A nut mixture contains peanuts, walnuts, and casheews (#427)
A nut mixture contains peanuts, walnuts,... ...the total amount of nuts in the mixture.
addition, arithmetic operations, distributive property, multiplication, operations, properties of addition, properties of multiplication
See All Addition Word Problems
Homework Help Questions
 2+(21)=?
 3/4 + 3/4
 1/8+4/8
 f+2(3f)=4
 Substitution and the distributive property using substraction
7x8y=12
y=2x+9
 (8)+4
 2(3+p)  2 + 6p
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Hundreds of video clips, worksheets, and word problems on addition of decimals.
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