Addition means combining together two or more quantities.

It is denoted by "+" symbol.

The numbers which get added are called addendends. The result of the addition is called "sum".

Things to remember:

1. If we add zero to any number the sum will be the number itself.

E.g. 5 + 0 = 5

2. If we add two numbers in any order their sum will always be same. This is known as cumulative property.

5 + 4 = 9 = 4 + 5

3. If we add 3 or more numbers their grouping will not matter. This is known as associative property. We should make groups to make our calculation easier.

7 + (5 + 8) = 20 = (7 + 5) + 8

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Useful free youtube videos

Basic addition Note : This video is the property of Smart Learning For All. We really appreaciate the hard work and brain put in by the team of 'Smart Learning For All' to bring out this video. We suggest you to visit their channel on youtube for more science videos. They have a huge collection of informative science and maths videos.

Commutative property of addition Note : This video is the property of Smart Learning For All. We really appreaciate the hard work and brain put in by the team of 'Smart Learning For All' to bring out this video. We suggest you to visit their channel on youtube for more science videos. They have a huge collection of informative science and maths videos.