Category : 1st Class
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.
Take another example
we follow the trick:
Add the numbers inside the egg given below.
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
Further, we can check from the method:
Points to remember:
number +number =number +number
Option (B) is incorrect because =
Option (C) is incorrect because =
Option (D) is incorrect because
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