Addition

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 Numbers 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 numbers:

4+3=?

You should get:   4 + 3 = 7  

Have a Play

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

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Swapping Places

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

3 + 2 = 5 3+2=5
... also ...  
2 + 3 = 5 2+3=5

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 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).

+ 1 2 3 4 5 6 7
1 2 3 4 5 6 7 8
2 3 4 5 6 7 8 9
3 4 5 6 7 8 9 10
4 5 6 7 8 9 10 11

Example: Find 3 + 5

• find the row starting with "3"

• move along to be under the column "5"

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

 

Larger Numbers: Use Addition in Columns

To add larger numbers use Column Addition :   Column Addition

Names

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

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