1st Class Mathematics Addition Addition of Two Numbers

     Addition of Two Numbers

It is the grouping of two numbers together and counting them as a single number. It is also written as:

Trick: Put two vertical lines for 2 and three vertical lines for 3. After this count all the lines together and that line will be the final result of this addition.

or

Now,

Take another example

Now,

we follow the trick:  

 Add the numbers inside the egg given below.

(a) 8                                                      

(b) 6

(c) 12                                                    

(d) 9  

Answer: (d)

Explanation

(a)        

(b)

(c)  

(d)

Answer:(a)

Explanation

In addition, if two or more numbers are added in any order the result is the same. In another words 1st number + 2nd number = 2nd number + 1st number

Therefore, 

Further, we can check from the method:

Again,     

Therefore,

Points to remember:

number +number =number +number

Option (B) is incorrect because =

Option (C) is incorrect because =

Option (D) is incorrect because