Addition & Subtraction 



Learn about this topic in these articles:

Math Help for Addition: Easy-to-understand lessons for kids, parents and teachers. Practice what you learn with games and quizzes. A room addition or bump out is a single room structure built onto the side of a house meant for a single function, such as a bedroom or bathroom. Sometimes it only expands the size of a single room on the existing house. A room addition or house bump out is an addition scaled far down. Addition Worksheets Dynamically Created Addition Worksheets. Here is a graphic preview for all of the addition worksheets. These dynamically created addition worksheets allow you to select different variables to customize for your needs.

major reference

  • In arithmetic: Addition and multiplication

    …forming the sum is called addition, the symbol + being read as “plus.” This is the simplest binary operation, where binary refers to the process of combining two objects.

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FinancialAddition calculator

fractions in Chinese mathematics

  • In East Asian mathematics: Arithmetic of fractions

    For instance, to get the sum of a set of fractions, one is instructed to

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rational numbers

Addition & Subtraction Addition
  • In combinatorics: BIB (balanced incomplete block) designs

    …of marks with two operations, addition and multiplication, subject to the usual nine laws of addition and multiplication obeyed by rational numbers. In particular the marks may be taken to be the set X of non-negative integers less than a prime p. If this is so, then addition and multiplication…

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vectors

  • In vector

    Two vectors can be added or subtracted. For example, to add or subtract vectors v and w graphically (see the diagram), move each to the origin and complete the parallelogram formed by the two vectors; v + w is then one diagonal vector of the parallelogram, and v

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  • In mechanics: Vectors

    If vector A is added to vector B, the result is another vector, C, written A + B = C. The operation is performed by displacing B so that it begins where A ends, as shown in Figure 1A. C is then the vector that starts where A begins…

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  • In principles of physical science: Fields

    …resultant force is found by vector addition; the vectors representing each separate force are joined head to tail, and the resultant is given by the line joining the first tail to the last head.

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Addition is ...

... bringing two or more numbers (or things) together to make a new total.

Here 1 ball is added
to 1 ball
to make 2 balls:
Using Numerals it is: 1 + 1 = 2
And in words it is:'One plus one equals two'

Example: When we add 2 and 3 we get 5.

We can write it like this:

2 + 3 = 5

Try It

Write this down, with the answer, using numerals:

You should get: 4 + 3 = 7

Have a Play

Drag the numerals to the two blue boxes see how addition works:

Swapping Places

Swapping the position of the numbers we are adding still gets the same result!

Addition & Subtraction 

More Examples:

5 + 1 = 1 + 5 = 6

7 + 11 = 11 + 7 = 18

4 + 100 = 100 + 4 = 104

Practice

You get better at addition with practice, so we have:

Math Trainer - Addition (train your memory)

Kindergarten Worksheets (easy addition)

Addition Synonyms

Addition Worksheets (normal and advanced)

Tips and Tricks

Learn more on our Addition Tips and Tricks page

Addition Table

We can also 'look up' answers for simple addition using the Addition Table (but it is really best to learn to remember the answers).

Example: Find 3 + 5

• find the row starting with '3'

• move along to be under the column '5'

Addition Financial

• and there is the number '8', so 3 + 5 = 8

Subtraction

Larger Numbers: Use Addition in Columns

To add larger numbers use Column Addition :

Names

Addition Calculator

Other names for Addition are Sum, Plus, Increase, Total

Addition Financial Credit Union

And the numbers to be added together are called the 'Addends':