2nd Class Mathematics Addition

                                                                     Addition

Addition of two Numbers

Addition is the method by which we can add two or more quantities. Therefore, in an addition two or more numbers are involved. Before knowing the rules of the addition, look at the following.

Let us add: 9+5

Therefore,

\[9+5=14\]

Rules for Addition

The following are the rules for the addition of more than one digit numbers.

Rule: 1

Start addition with the 1st digit from right, then with 2nd digit from the right and the process goes on.

In another words, add ones 1st: then tens: then hundreds and so on.

Look at the following addition:

\[14+15=?\]

Rule: 2

If addition of one’s gives result in 2 digits, then add the left digit of the result with tens and the process goes on.

Look at the following addition:

\[25+26=?\]

Here, the left 1 of 11 is added to 4 as below:

• Example:

The following are the stock of the given articles in a general store:

How many articles are there in all?

(a) 23                                        (b) 44

(c) 57                                        (d) All the above

Answer (b)

Explanation: Therefore, option (b) is correct.

Addition of Three Numbers

Let’s understand it through the following examples:

• Example:

{17} + {12} + {13} =?

Trick:

Addition of Images

Addition of images means grouping of more than one images into a single group.

In the

                                                                \[{{2}^{nd}}\]

example we add group of [6] faces with group of [3] faces and get the result as the group of [9] faces.